So I'm 32 weeks pregnant and for the past two days I've been having tightening and a period like feeling. I haven't had any pain it's just super uncomfortable. I also get very light headed and nauseous when it happens. I also feel like my baby girl is very low like I feel her down near the pelvic area and my vagina is so so so sore. Do you think I need to call my midwife or is this all supposed to happen?