hi went for an early scan on the 2nd Feb and got told I was 6 weeks 4 days.. I then went for another scan on the 22nd Feb and got told I was 9 weeks 1 day. I slept with someone on the 21st December and have spoken to my doctor about this and she says sperm can only live up to 3 till 5 days so the time frame misses it as I would of fell pregnant beginning of Jan. the thing is I don't remember when my period in December was so I can't calculate my overlation day I'm so stressed I can't sleep I'm crying all the time as I need to work out if it's my parents or the person I slept with. how accurate are scans if I am 9 weeks 1 day on the 22nd then it can't be the other guys but I've read it can be a week either way I'm just so confused someone please help?