As a Certified Diabetes Educator, I was taught to educate my gestational diabetes and pregnant patients with diabetes to avoid fruits and dairy before noon. I know this is hard! That’s when you all are craving that glass of orange juice, but that’s the whole point here. We need you to give up that orange juice for the next six or so months for the sake of your baby. Instead, you can have a real orange with lunch; try it with a spinach salad with tuna salad and whole wheat pita. The nutritional value is pumped up by all those vitamins and the spike on your blood glucose will be reduced dramatically by the fiber in the real fruit combined with the protein you had in your lunch. You can even have a glass of milk; you’ve included all of your necessary food groups, and you are still only at 45 carbohydrates for the whole meal!
Diabetes is one of the most common chronic diseases in the world. In 2014, diabetes affected about 387 million people worldwide and resulted in $612 billion dollars of health-related costs.  Unfortunately, as a conventional western lifestyle of poor nutrition and exercise habits becomes more popular, diabetes is expected to affect about 592 million people worldwide.  In the United States alone, diabetes increased from 5.58 diagnosed cases in 1980 to 22.3 million diagnose cases in 2013. 
The DASH Diet, which stands for dietary approaches to stop hypertension, is promoted by the National Heart, Lung, and Blood Institute to do exactly that: stop (or prevent) hypertension, aka high blood pressure. It emphasizes the foods you've always been told to eat (fruits, veggies, whole grains, lean protein and low-fat dairy), which are high in blood pressure-deflating nutrients like potassium, calcium, protein and fiber. DASH also discourages foods that are high in saturated fat, such as fatty meats, full-fat dairy foods and tropical oils, as well as sugar-sweetened beverages and sweets. Following DASH also means capping sodium at 2,300 milligrams a day, which followers will eventually lower to about 1,500 milligrams. DASH Diet is balanced and can be followed long term, which is a key reason nutrition experts rank it as U.S. News’ Best Overall Diet, tied with the Mediterranean Diet.
Control portion size. Ideas for how to do this include downsizing your dishes, eating without watching TV or being otherwise distracted, and keeping unhealthy food out of sight. An important component of the DASH diet is also to eat smaller portions more frequently throughout the day. This is a way to reduce the risk of overeating and to distribute your energy evenly during the day.
Beans can help boost feelings of fullness and manage blood sugar levels, making them an excellent ally in your weight loss battle. In fact, a recent study published in The American Journal of Clinical Nutrition found eating one serving a day of beans, peas, chickpeas or lentils could contribute to modest weight loss. And if you need another reason to bulk up on beans, remember that the fiber and protein-rich legumes are other excellent sources of genistein—the same compound found in peanuts and lentils that aids weight loss.
The Mediterranean diet wasn’t built as a weight loss plan — in fact, because it wasn’t developed at all, but is a style of eating of a region of people that evolved naturally over centuries, there’s no official way to follow it. But it’s popular because it’s a well-rounded approach to eating that isn’t restrictive. Two of the five Blue Zones — areas where people live longer and have lower rates of disease — are located in Mediterranean cities (Ikaria, Greece and Sardinia, Italy). (2) These places are known for having some of the lowest rates of heart disease and cancer worldwide. (3)
Unlike the keto diet, the Atkins diet doesn’t necessarily advocate increased fat consumption. Still, you might increase your fat intake by limiting carbohydrates and eating more animal protein. The potential drawbacks are similar. Aside from a high saturated fat intake, there is the possibility of low blood sugar, or hypoglycemia, from restricting carbs too much. This is especially true if you take medications that increase insulin levels in the body and don’t change your dosage. Cutting carbs on the Atkins diet can potentially aid weight loss and help you control diabetes symptoms, but there aren’t enough studies to suggest that Atkins and diabetes control go hand-in-hand.
While there isn't "a" Mediterranean diet, most versions share many of the same principles. According to Oldways, the nonprofit food think tank in Boston that helped develop a Mediterranean food pyramid, you'll load up on fruits, veggies, whole grains, nuts and legumes; eat plenty of fish and seafood; get a little poultry, eggs, cheese and yogurt; and mostly pick at sweets and red meat. And don't forget a drizzle of olive oil and (if you want) a couple glugs of wine.
Note: Because you'll be excluding some major food groups on the keto diet (grains, many fruits) you should definitely think about taking a multivitamin—especially one that contains folic acid, which helps your body make new cells and is often found in enriched breads, cereals, and other grain products, says Julie Upton, R.D., cofounder of nutrition website Appetite for Health.
Cyclical keto diet: The Bulletproof Diet falls into this category. You eat high fat, low carb (less than 50 grams of net carbs a day) five to six days of the week. On day seven, you up your carb intake to roughly 150 grams, during what’s called a carb refeed day. Carb cycling this way helps you avoid the negative effects some people experience when they restrict carbs long term, like thyroid issues, fatigue and dry eyes. Learn more here about how carb cycling works.
The plan promotes long-lasting, sustainable changes, and undoubtedly a bounty of research backs this up. In fact, one December 2013 study in the American Journal of Medicine shows that people following Weight Watchers were close to nine times more likely to lose 10 percent of their body weight, compared to people following a self-help diet plan. (20)
It sounds as if you may have been following a very strict keto protocol. I’m not, and have not followed a ketogenic diet, but am interested in it. I’ve been reading up on it a bit on the blog called Mark’s Daily Apple.* I’ve been following it for several years now, even before Mark tried keto. Based on some of his blog post, both keto related and otherwise, it seems that women do better with slightly more carbs than men. He’s written several blog post specifically for women, including one called 7 Keto Tips for Women, which you may want to read. https://www.marksdailyapple.com/7-keto-tips-for-women/ Then there is this one Where I Part Ways with the Popular Keto Movement https://www.marksdailyapple.com/where-i-part-ways-with-the-popular-keto-movement/ Perhaps the problem wasn’t the keto diet in and of itself, but that you went too low carb for you. It’s worth considering. I’ve also found this site to be pretty interesting https://peterattiamd.com/ Here’s a link to his section on keto https://peterattiamd.com/category/ketosis/ He followed a ketogenic diet for a number of years, though as of 2016 was no longer ketogenic, but definitely eating lower carb than most. (That is under Articles, on the drop down menu, click on Personal.)
That’s why the Bulletproof Diet uses cyclical nutritional ketosis, and why on days when I eat carbohydrates, I always have Brain Octane Oil so my cells have a steady supply of ketones. This builds metabolic flexibility: you can eat fat and carbs and your body will use them both, which is the goal. You want to be resilient and full of energy no matter what, and that means you want cells strong enough to burn whatever you give them.
Before starting, ask yourself what is really realistic for you, Mattinson suggests. Then get your doctor’s okay. You may also work with a local registered dietitian nutritionist to limit potential nutrient deficiencies and talk about vitamin supplementation, as you won’t be eating whole grains, dairy, or fruit, and will eliminate many veggies. “A diet that eliminates entire food groups is a red flag to me. This isn’t something to take lightly or dive into headfirst with no medical supervision,” she says.