This is normal. Your hormones are changing and that’s why this can happen. It happened to me and then I was constipated in my 2nd and 3rd trimester. It sucks I know. See a doctor if you get haemorrhoids (happened to me even with the watery diarrhea because of how often it was happening).
I had this at the start of my pregnancy, it settled for me after a few days before the “morning sickness” (which I tell you, for me lasted every day all day until my baby was born) kicked in. Try and keep your fluids up, as it can be quite exhausting x
Sounds like food poisoning
Honestly… it could just be IBS 🤣 but maybe phone your doctor to reassure you about baby x
Aww dont worry, the cramps are probably from the diarrhea