had protected sex on the 13th of April with a man I met, I then come on my period in the 14th of may. I had unprotected sex with my boyfriend on the 20/21 of may. I then did a clear blue pregnancy test on the 5th of June and it said I was 1-2 weeks pregnant I then did other test on the 10th of June which said I was 2-3 weeks pregnant. Was the baby conceived in May? I had my 12 week scan on the 8/8/17 which said I was 12 weeks +3. Do my dates add up for May conception?xx