Aww Megan, I'm sorry to hear about your health problems.
The most important thing right now is to listen to your doctor and concentrate on getting yourself better.
One WOE does not work for everyone, and with help from your doctor you will find the best one for you. I tried Atkins several months ago, and while a lot of people have good luck losing weight with that WOE (I was losing too), I did have some health problems start to crop up with eating so much protein and saturated fat, and was told by my doctor to stop. I am doing better with SBD now, because of very limited sat fat, and better (i.e. leaner) and smaller amounts of protein.
You are still welcome to come here for support and friendship! And please be sure to let us know how you're doing.