I had unprotected sex on November 18 and he came inside of me I got my period on November 25 and it was reallly lite and it only last for 2 days and normally it's heavy and last for 5-6 days can I be pregnant

It's possible, but right before your period is not the most likely time to become pregnant. It could be that it is just an off period. Had you had sex prior to the 18th even with protection? Certainly pregnancy can occur even then.

You'll have to wait and see. Give it a couple of weeks and try a test or wait and see what happens when your next period is due.