Bloody stool 22 weeks pregnant

This weekend I had severe stomach cramps (thought I was in labour) - luckily I wasn t. Went to the hospital & they monitored everything and probably it s a light infection causing cramps & diarrhoea.

However when I came home in the evening I started having blood in my stool (white slimy & bloody stool). Went to the doctor today and they re going to investigate my stool. This will take about 4 days, but I am super worried :-( anyone else had this?? I m imagining the worst scenario s like listeria etc...