Trying to Lose Weight

I've gained like fifty pounds since I first got on an antideppresant called Invega. My doctor is now trying to switch be over to Abilify hoping it will help. I have been trying to watch what I eat but my medicine causes a ton of cravings and sometimes I find myself eating fries and other unhealthy foods. So I try to go swimming akot to lose weight. I now swim four or five hours every day, floatinfg an hour out of that and still only seem to gain weight. Its. Frustrating and I need to find a healthy way to lose weight on antideppresants or barely eat anything at all. I need help and support. I'm Gabby by the way.