30 weeks tomorrow FTM

So I woke up having extremely bad diarrhea anything I eat or drink including water comes right out. Also really crampy and it’s constant. Not painful just uncomfortable feeling. Extreme pressure in vagina that hurts to sit on anything other than toilet. Baby is still kicking and moving I can feel him every once in a while. Has this happened to anyone?? I don’t want to be that person that calls about every little thing lol