I had my period August 6th 2013 and I had sex with my first partner August 22nd 2013 (unprotected) I then had sex again the 28th of August but we used protection and he says nothing happened but I am really freaking out about it.. what are the possibilities of this being guy number ones baby.. my ultrasound dated a week earlier I went September 26th and she told me I was 6wk 2days but I don't understand how it could be if I know when my real potential conception date was which I believe is the 22nd of August ! Please help .

Conception date is a best guess and can be off 2 weeks either way with an ultrasound. In other words, you won't find the answer to who the father is this way.

The only way to find out who the daddy is, is a DNA test after the baby is born. That's the ONLY way.

Good luck.

It might help you to know that say one of your pregnancy is the first day of the cycle in which you conceived. So in other words, it's the first day after the end of your period. The first day of the pregnancy is not the day of conception. In fact, conception can take a couple days as the sperm travels and penetrates the egg... you remember the high school movies, I'm sure.

So conception is usually about mid cycle, maybe day 12 to day 17... somewhere in there.

It might help you to know that say one of your pregnancy is the first day if the cycle in which you conceived. So in other words, it's the first day after the end of your period. The first day of the pregnancy is not the day if conception. In fact, conception can take a couple days as the sperm travels and penetrates the egg... you remember the high school movies, I'm sure.

So conception is usually about mid cycle, maybe day 12 to day 17... somewhere in there.

Just have to add, the 12 to 17 days is for an average cycle. Unless you know exactly when you ovulated by testing basal temperature every day for at least 6 months and tracking ovulation, there's no way to know when you ovulated. You can ovulate during your period. You can ovulate any day of the month. So unless you know for sure when you ovulated, basing conception on the average cycle is not going to give you any answers.