hello ,
I did a diet b4 called Dr, Bernstein diet and I lost all the weight I needed to lose in 3 months(around 100 lbs) , I was so happy , and after three months, I tried to reward my self with a bit of chocolate and BOOM, horrible pain , around my stomach and chest , i had to call 911. and was rushed to the hospital , they thought it was bad acid reflux after they checked my heart and it was good. after all I had those attacks few times b4 they discovered that It was my goal bladder. My dr told me that it is very common when u lose weight fast. i removed my gall bladder and the painwas gone, but I went back to my eating habbits and gained all the weight back. I suggest u check ur gallbladder for gall stones,
My dr who did the surgery for me (sleeve one) asked me if I have a gall bladder , I told him that I have removed it and he said, good as I was about to suggest I remove it while doing the sleeve as the probability of gallstones is sooo high
good luck dear