I'm young and I really don't understand the conception thing. I have a question someone please help me understand. My husband and I split up. I found out that he had a baby during our engagement. So I left. I had a friend and we were not sexually. I started back talking my husband and Jan 27 we had sex and he released in me and I felt bad. But around Feb 2 I had sex wit my friend for the first time and as he was starting to release I made him get up but still it was a little in there. On Feb 27 I found out I was pregnant so I really don't understand the dates on how they calculate. Is it my husband r my friend. I really want it to be my husband. My due date is Oct. 25th, 2012. Please help understand