Am I pregnant?!?!?!?

I had protected sex the day before my period started which was october 8. The very next day I started my period. I had my normal cycle nothing was different. The day my period ended ,october 12, I had protected sex. The next day ,october 13, I had protected sex again. That next day I was using the bathroom and I wiped bright red blood. I thought it was my period but it wasn't as heavy as usual, but it got lighter and lighter and then ended the only thing that was left was discharge. The very next thing day the same thing happened, but the blood was brownish red. I was wondering what does this means??

I can't answer if you're pregnant or not, although I'm guessing probably not since this sounds like it all probably happened before you ovulated. The blood could just be normal cervical abrasion from having sex. Definitely see a doctor if there's any discomfort, unpleasant odor, or anything else unusual going on. This is a really helpful website for understanding what's going on in there under normal circumstances:
http://www.beautifulcervix.com/

Also, you might find things less stressful if you understand when you're ovulating and know when your fertile time of the month is. Learn more about tracking ovulation (so you can avoid sex then) at:
http://www.tcoyf.com/

yes