This happened to me the other day I’m 30 weeks and 2 days. I talked to my MFM doctor and he said it could just be all the stuff down there getting ready, which makes sense. I’ve also heard if your are bending down too much it could happen from that but if it’s really light and not bright red or anything you should be okay, but bring it up to your dr for sure!!!
Could just be from the extra blood volume we have since becoming pregnant and baby's putting more preasure on some veins down there. Definitely mentioning and asking OB is best bet to know for your care🧡