Hello! It’s possible to be pregnant after having my period. This is the thing I have a baby’s who is 4 months old now. I’m on birth control pills and my last period was on November 4, 2019. I forgot take my pills for 5 days and had sex that was before period started, well I did a pregnancy test 2 days ago came back positive also blood work same day also positive. 2 days after first blood work doctor did another one and also positive. But my concern is that in the ultrasound today nothing shows and I was bleeding a little bit like implantation bleeding with lower back pain. He is going to continue monitoring me to see what is going on I just don’t know what to think now.