Tomorrow will make my 6th week from giving birth... my period stayed on 2 weeks afterwards n then I started back having sex... then this month it came on for 4 days which it mainly stays on for 5 days... n now I'm spotting light red blood... could I be pregnant again?

Yes, you could - or there could be another problem. Didn't your Doctor tell you not to have intercourse for at least 6 weeks?

When is your next check up?