Depends how heavy the bleeding is, if its heavy/normal its probably ur period..If its only light then only time will tell... Have u had unprotected sex during the time uforgot?? I'd say its probably ur period if its normal/heavy tho...

But in the future you should really be more consistant, no only to prevent preg, but it can really screw up your hormones just spiratically taking them--and may make it more diffucult to conceive in the future..

Good luck =)