Constant stomach pain? Tmi about poo!

I’m only 8 weeks. I got my gallbladder removed last August and have had some digestive issues since then. It started to get better, but since getting pregnant I’m miserable. I constantly feel completely constipated, like painfully so, but 75% of the time it’s diarrhea. When I do take a harder poo, it’s quite thin. I told the nurse when I first became pregnant she said to start a probiotic and that I could take immodium. I’m just constantly in pain. Like horrible cramping. Is there anything I can try to relieve it, or so I just have to wait till I see my ob (1 week). Thanks, and sorry for the overshare.