could i be pregnant?

I would like to ask if i could be pregnant or not. I had sex with my boyfrnd a week bak but becauseit was my first time, i was not ready and made him stop before he could ejaculate. But a day after ( which happnd before as well) i started having abdominal pains next to my belly button. I started my periods yesterday, which was painful and a bit lighter and during the night i had those abdominal pains again but this time, more painful. they stopped this morning after i went to the bathroom(toilet), i felt better and my periods are better as well, but could i be pregnant?

[smjmekg]

If you had unprotected sex there is always a possibility of pregnancy, but unless you ovulated late, than I don't think you are. Your period would have been late or would not have come at all if you were pregnant. The pain you had after sex could just be from you having sex for the first time.