HELP!!!

Okay guys, I'm kinda freaking out but don't want to get my hopes up. I bled a for 2 days, 3 days before my period was due. I am always completely predictable with my period. We have been trying now for 8 months and I'm so confused!! I've been having lots of breast pain so I called my doctor to schedule an appointment for tomorrow morning. They told me that even though I'd had my "period" to take a pregnancy test to rule that out. am I seeing things because I see a teeny tiny faint line. HELP HELP HELP!!!!!! I don't want to get excited but I am literally wanting to scream!!!