Period while pregnant?

Just wondering if anyone else has had this happen. I took an at home test on Monday which came back with a faint line, went for a blood test Tuesday which came back positive but very low count. Am supposed to go back today for another blood test to make sure numbers are going up. My period is now 4 days late but I just started bleeding today what feels like a normal period. Has anyone had a period after getting a positive result? My husband and I had a miscarriage in June with 2 procedures to remove everything and are really hoping for a positive for Christmas so we are keeping our fingers crossed but thought I'd ask and see if anyone has had anything similar happen