Abnormal period

I normally have a normal period... About 4 to 5 days and the first day is usually heavy then goes light... I've been on birth control for about 6 months and I'll be honest I'm not always on time with it... My boyfriend and I have been having unprotected sex also... but anyway... this month my period has been pretty light then spotting and now its back to light bleeding... and its been 9 days... its also got mucus...

Whats the deal?

Could I be pregnant???

you could be pregnant or it could just be from to much excersize or anything that involves more energ and movement then you usually do, which actually regulates your period...hmm best best though is to get a trst done in about a week or 2 just to be sure.