I think it all depends on what kind of organism you have in your vagina. Ha ha. Just joking...but, so you know, it's ORGASM. BIG difference.
So...not to make light of your question. But, yes, there's a chance you could be pregnant. I ovulate, generally, on day 10 of my cycle. You had sex on day 11. Also, sperm can live for 3-5 days inside of you...so even if you ovulated after day 11, there may have still been viable sperm in there.
The only way to know is to wait a couple of weeks and take a pregnancy test. Good luck!
Tricia
have you test? the HPT can detect HCG level 5 days before your period...
good luck.