Recently I have had unprotected sexual intercourse with my boyfriend , I was due to get my period on that day, my period was late by 4 days. During my period I have gotten the contraceptive injection , and I'm kind of getting worried that I could be pregnant , I do not know what to do /: is it even possible that I could be pregnant ? Please help !

1. Had sex, no protection
2. had period after you had sex ( I assume it was a normal period)
3. shot has no bearing on prior sex

Most likely no, a very very small chance, since you can have the first period if sex is so near, but it is not likely.

You will need to wait till the time for the next period to see if you have it or not