Excess bloating and indigestion.

I started going gym previous year and started taking whey protein and creation for muscle mass and weight gain after 7-8 months I started having loose motion, acne and excess bloating and pain in lower left abdomen.I consulted a gastroenterologist in my home town after LFT, KFT, ultrasound, urine test , sugar and fasting sugar and many other blood related test everything is alright. Doctor gave these medicines 1.Gut Ok ,2. Rifaximin 200, 3. Dromis AM, 4. Ciproid 500 & 5.stranidazole And I live in hostel Now since 8-9 feb I am encountering kind of same problem even I have stopped taking whey and eating good amount of fruits but what I have included new is morninga power, amla juice and neem, karela & jamun juice one a week I don't know why this is happening, I have lost around 11kg weight during this time period. Any suggestions? Please help me out