Stomach always upset. Became same now.

I dont remember much but since i started my PCOD meds in the past 2 yrs back, i started getting this issue very oftenly. As soon as i used to eat, just minutes or seconds after i had to go to the loo. After i stopped meds too, it continued. Now as soon as i will eat anything, my stomach hurts like cramps and i will have to go the washroom. Even if i eat from outside or homemade very light food, raw veggies or fruits or be it water sometimes, sometimes my stomach hurts. And habit of going to the washroom immediately after eating has gotten me into mental trouble that i have lost the confidence of going out, becz if i eat, i will have to go the washroon. I get gas related problem very often now. 2 years back i didnt know what that was. Loose motion most of the times. Suggest. I will go and see a gastro for sure which i did in the past too but it was temporary solution, my condition became same now.