So almost four weeks ago had sex unprotected and I took a plan b the next day. It is now 7 days past my expected period and three days ago I had bloody discharge and then it went away and I’m back to normal discharge. Have been having sex this whole time using pull out method and yes I know not smart I’m well aware. But I took two pregnancy test one didn’t work at all and the other said negative and it is very unlike me to be this late. What should I be thinking?