Hi Ali!
I've been in a situation similar to yours (my highest weight was 385, though mercifully I do not have the health problems you do).
The first thing I would say is that for all the "I should lose weight" and "I'm going to die if I don't lose weight", if you attempt to do so before YOU want to do it, for reasons that are important to YOU, you're just going to be caught up a cycle of frustration and self-loathing. Never try to lose weight just because someone said you should. You can't make yourself do something you don't want to do.
The thing about gastric bypass is that it's not a cure-all. It's hard on your body and has very serious risks and side effects. The most important factor to consider, though, is that it's pretty easy to gain the weight all back, even after the surgery. If you have the surgery to correct a physical problem but don't address the behavioral or emotional problems you may have, you will wind up overweight again very quickly.
What I've learned over the last several month is that this is a process of trial and error. Some things have worked for me, most have not. I try new things all the time and they usually fail. I'm motivated to keep trying though.
Personally, I reject a lot of the artifical constraints on eating (no eating after a certain time, only eat a certain type of food, etc.). I prefer a more natural, intuitive approach. Even if I don't lose weight, I'm learning to listen to and trust my body and I'm a happier person for it.
I would encourage you to see a nutritionist if you feel you don't know much about nutrition, but I would caution you to listen with a critical ear. Sometimes nutritionists push a "one size fits all" method and expect you to try to fit yourself into it, instead of working with you to figure out what is the best plan for YOU. Try a few people until you find a good fit.
Best of luck to you. There's lots of information and support here.
