hi im 37 weeks pregnant, and woke up with what I thought was a one off contraction at night. in the morning when i went to pee, i had very runny diarrhea instead and have been 4 times since. my last poop had a lot of white and yellow thick tissue like mucus in it, never had that before . is this pregnancy related or could it be something I ate last night as we ate out? What should I do, it's past my doctor's working hours?