Physical problems affecting recovery

I was just wondering if others had physical problems affecting their recovery...?

I have been discharged from eating disorders services due to other mental health problems needing addressing more than my ED. But I have been told if I carry on losing weight I won't be able to continue therapy, so I have been trying to maintain/ increase my weight and intake with no specialist support. However when I have done this I am getting really bad stomach pains and keep being sick. My GP said that this normal and could go on for 6 months. But it has caused me to have quite a sudden and bad relapse after doing so well. I managed to eat 'normal' for 2 months and there was no change to the pain, hence the relapse...

I was just wondering if other people had had these problems when trying to recover and if anyone has any tips on how to manage the pain or how to fight the relapse???