constant diarrhea cramps

i’m 23 weeks and the last few weeks have been hell. i started having diarrhea cramps after eating, then i started actually having bad diarrhea. it’s been at least 2 weeks of this happening. i changed my diet and cut out all caffeine again, nothing is helping. went to the doctors they said basically nothing and said im not dehydrated. like wth??? what am i supposed to do, im scared to leave the house to long. anyone have this symptom?? its been very annoying, and im getting worried!!! pls help