The 1st day of my last period was August the 1st 2007 and it stopped on the 7th. I was having sex with another man on the 8th 9th 10th 11th and 12th of this month and I got back with my boyfriend on the 13th and was having sex with him on the 15th and 16th

I went for a scan on the 7th of December and they told me I was 18 weeks and 1 day pregnant so does this meen I conceived on the 2nd or the 16th of August?

Before I came on my period I was on the pill and I was having spottin for a week before I came on could this meen I was pregnant then?

Please help me

I'm still not sure why they go back to the first day of your last cycle when calculating that. It could be the other man's... Way more likely that you conceived on or around the 16th. If it matters to you, and him, a paternity test would answer the question. When the baby is born, it's features may be so like your boyfriends that there will be no question.

The idea of when you conceived is not that exact, it is a guess, and can be off a week or so. It means you have no idea who the father is for sure, till the child is born and you get a DNA test to prove who he is.

And you can not go by features, sorry babies change looks, there are gene traits that are hidden or skip generation. I have a son who is adopted, in his baby photos, everyone says how much like me he looks, more than my other boys.

DNA test, only way to be sure

The dates you had sex with these men are too close to say for sure who the father is.

They only way you will know is a DNA test once the baby is born.