I've been having unprotected sex with my boyfriend for about 2 months. He has never done anything inside of me. Just recently I got my period a week before it was due and it was 4 days long (usual is about 6 to 7) and it was very light. Could this possibly be from stress? Or am I pregnant?

You were having unprotected sex... that's enough to get pregnant. But you should have already known that, having unprotected sex means one of two things... you are actively trying to get pregnant... or you are dumb. I don't think you are dumb.

If you were having sex he actually has done something inside you. Consider the penis a leaky faucet.

But the first symptom of pregnant is not getting your period at all.

But it wasn't like a period. It was superrr light and a week before I was supposed to get it

Stress maybe... that can very well do that.

See what happens when you would have normally expected your period. If it doesn't show, give it several extra days and then you can always try a pregnancy test.

Cycles can be off sometimes; it may be just from that.