My periods aren't always on time but I did have unprotected sex a few times I don't really understand my body when I'm ovulating so I'm not sure if I'm pregnant I took a test on Thursday 21 dec 2012 my periods were due on the 23 dec 2012 n I started bleeding on the 22 dec 2012 but the bleeding is only light and doesn't feel like my normal period I do feel light headed and nusua and I want to sleep during the day my breast are heavy and sore could I still be pregnant or hve I got my normal period please help me
Milissa

Possible but rare...

What is a false period-Pregnant Health Questions answered (http://www.themedicalquestions.com/Pregnant/what-is-a-false-period.html)

It's not all that rare, Smoothy. Many women have some bleeding during pregnancy. You may be testing a little early to detect a pregnancy so try again first thing in the morning in a week or two.

There are a lot of reasons for your cycle to be messed up so don't panic - you're not necessarily pregnant.