I'm going to guess the cramping is due to your bowel contracting, which is due to your diarrhea. Diarrhea isn't extremely uncommon in pregnancy. It is safe to take regular Imodium during pregnancy. See if that helps. Best of luck my dear.
Thank you for commenting.
Drink lots of Gatorade! dehydration can cause you to go into labor.....feel better!!
I agree with Hbabe2. Diarrhea can cause aweful cramping. Later on in pregnancy I tend to feel it higher in my stomach. I usually get it if I drink too much milk although usually I have no problems with dairy.