I had a miscarriage about 2 weeks ago or just over 2 weeks ago the bleeding stopped about 5 days ago and I've had unprotected sex 3 times once while I was still bleeding but not heavy was coming to a end and twice when I stopped bleeding .I have been very nauseous and very tired and I have also experienced really bad headaches with a few cramps in my stomach mostly to the left and middle, I took 3 pregnancy tests all the same ones but all different times of the day

First one on top was with urine I had from 3 this morning and tested it at 11am this morning then the second was at the same time but fresh urine then the third one was at half 1 this afternoon all had a line but the first 2 were light then the third very dark am I pregnant?