My period was 10 days late, then I got what I thought was my period but it was very lite, and only lasted 3 days. Is there a possibility that I could be pregnant?

Yes. If you had sex then it's possible that you're pregnant.

Have you tried a pregnancy test?

Hello! When ever you have sex, you always risk becoming pregnant. You should go and get a pregnancy test, as we are unable to tell if you are pregnant--but yes, you could be pregnant. Some woman experience light bleeding through-out their periods.

There is a possibility that you are but your period could be starting to go irregular I suggest that you make an appointment with your doctor and get a pap test to make sure that there is nothing internally wrong but for now just take a pregnancy test just to see hope everything goes well for you