Help!!!!

I've been having crazy sex 2 weeks before AF was due. She came. But she lasted longer than usual. I normally bleed for days, but this time it was 7,except the last two days were very light, but the colors were brownish pinkish. I'm kinda having some symptoms (at least I think so). Could it be possible to be pregnant? We've been trying for a while now. But nothing had happened. I got AF on the 1-28 and it went off 2-3. Could I be pregnant? Should I test or wait. I need serious and positive comments. Thanks.