i’m having a problem.

i have no idea what is causing me to have the WORST diarrhea of my life but i’m over it. i don’t feel sick. my stomach doesn’t hurt, it’s just very grumbly. like makes a whole lot of noises then i have to run to the bathroom. that’s literally the only thing wrong with me. and it’s so bad i literally can’t hold it. it just comes out. i have a doctors appt in like an hour and a half and i’m afraid she’s going to check my cervix and i’m not going to be able to hold it in. i don’t know how to get rid of it. i’ve had it for 2 days now. i had it on monday, then it went away on tuesday, in fact, i didn’t poop at all on tuesday. then last night and this morning it’s just hitting me again!!! i don’t understand. someone please help????