got a faint line now I'm bleeding ?

Megan
Hi guys.. so yesterday I got a faint line on a test and was beyond happy obviously!! But yesterday I started to bleed lightly now I'm bleeding and cramping today , it's not as heavy as my normal period but it's almost a medium flow . 
This would be my first pregnancy . 
Any advice ? Internet pages and my OB Can only go so far I need one on one people who have expierenced this and know what could be happening ?