Help please

I’ve have Diarrhea for the past week, bad back pain pretty much every evening and sometimes when I wipe there’s a tiny bit of pink stuff on the tissue. I’m only 29 weeks and don’t really want to go to the hospital as they treated me quite badly there last month, I’m gonna see if I can see my midwife. I’ve been told my baby is really small and have another scan in a week. I’m hoping it’s nothing to worry about but has anyone else had this