Back in October I got my period, I was supposed to get my period in November but didn’t. Took a pregnancy test in December and it showed positive, says I conceived around December 13th. My baby is head down at 30 weeks and dropped at 33 weeks, my ob said he is sitting very low. I keep getting period like cramps on and off. I’m currently 35w2d; I’m due September 19. Is there any chance they could have my due date wrong because of my missed periods between those months? Or maybe I’ll just have an early labor...