I’m 5 months postpartum and I had 3 regular periods while pumping. After I stopped pumping 2 1/2 months ago my period was late and haven’t gotten one since. I did had several unprotected sex but we did the pull out method. I have took a digital pregnancy test late night 2 days ago and I got a negative. Can I be pregnant but it won’t show yet or is there something else going on?