Insight

Hello thereeee! So I had unprotected sex twice this month. Neither of which were during my ovulation period so it says. We have been pulling out. I was supposed to get my period last week but it never came and there were no signs or symptoms of my usual PMS. Yesterday I was nauseous with light bleeding but nothing more than that. Today is the same thing. Should I just wait and see if my period is late because I had sex, or should I take be concerned it could be something more ? H