PREGNANCY - Pains in side- back and sholders - should i worry?

Don't mean to scare u but iv had 3 miscarriages and all three started with pain in my back on the right hand side but quite low down near the top of my bum! But saying that iv also had pain there in this pregnancy at the beginning and im 17 weeks now and touch wood everything is good!! Good luck hunnie even if this turns bad u will get there eventually xxx