Just quick background information
I'm on birth control and sexually active, but I'm taking meds for my skin which are supposed to reduce the effect of birth control. Usually we use a condom.

My 21 day cycle is over and its time for my period. I have read a lot of things which say thatthis may not be a period. Usually my period starts 2 days after I take my last pill. And I've been very anxious this month about it because of the skin medication I'm taking. It finally came but I'm not sure if it is it. It hasn't been normal for me. It's a bit more pink and more clots, I don't know if this is natural or not. Im also under heavy stress if it matters, and I'm not cramping as much as I usually do with my periods, and my breasts are tender and sore.

What does this mean? Am I pregnant?

I doubt it, it sounds like a period to me... all normal signs of PMS... but you know your body best. I would suggest taking a test in a week if you are still skeptical.