Mc at start of Aug but BFP now

Sonia
I was approx 7w 2 d and started bleeding heavily on 4 th August. As per hospital request I took a test on 19th August and it was negative. Started to get sore boobs again so took test again on Friday. Have tested 4 times (paranoid!!) and all have come up BFP!! Last one was clear blue digital which said 2-3. I'm soooo confused and wanted to know if anyone else had this and gone on to have healthy pregnancies/babies?