Hi everyone,

So exactly a week ago I had sex with my Girlfriend for the first time, I pre-jacked in the shower ( rude i know) cause I was worried and wanted to last longer and about an hour later we did the deed. However about 15 mins in I felt like I was going to cum but it subsided so i kept going. But when we stopped about 10 minutes later before i came and I went to the bathroom I noticed that the condom had semen in it, not sure how much though but there was a decent amount. I was worried so as you do I asked if she wanted me to go and get her the pill but she replied saying that she had irregular periods (every 7-10 days she says) and that she cant take any birth control until the doctor does tests (next time she gets her period). I was pretty worried about this but she assured me that she gets her period so fast that she'll just wait to see if she'll get it. Oh and we had sex exactly one week after she got over her last period.

So as of now it has been two weeks since her last period and she hasn't has it yet ( usually wouldnt be weird but she is irregular) and what I was wondering was - 

Could she be pregnant?
Usually if someone has a period as short as that in what timeframe would they ovulate?
and once again could she be pregnant?

I'm sixteen by the way. 
Pretty scared right now.

Thanks a heap guys.