How can I stop bloating?!

Over the period of about 4-6 months last year I lost my first 10 kgs, but after that things started to get harder to lose weight. I ended up losing another 10, making me 50kgs, but I became obsessed with exercise and was only eating around 600 calories a day, I had no energy, extremely moody and couldnt think straight. At one stage I felt so ill I couldnt get out of bed. So I desided to stop it. I started to eat more and my stomach started bloating like a balloon every time I ate.I had put on 10 kgs again, and have digestive problems ever since. It has been 6 months and I have just recently lost around 5 kgs from running and eating well, but I'm still bloating and can hardly digest anything

I have been to the doctor - they put me on IBS tablets, which haven't helped
I went to a nutritionist, they say I may be intollerant to gluten - but even rice makes me bloat.


???

I don't know what else to do.

Other symptoms:
Fluid retention, infrequent bowel movements, darkness under eyes, no energy