Help please, could i be pregnant?

Well my period came early this month and it was different from my others, my breasts arent tender at all like normally, but my nipples are very sensitive, and my bleed it first started very light for two days then went heavier for a day and now it has gone light again and usually my flow is very heavy. What do you think? Can I be pregnant? Should i take a test? I need all the answers and advice i can get =] Thank you