I have a question I am pregnant. My last menstrual period was June 5, 2015. My period lasted seven days. My cycles are always 28 days. I had a one night stand thing on June 25, 2015 around 12:30pm with a condom. (I know very STUPID of me, and I do not have any contact with this person nor do I have his number. Will never see him again as I do not know his name.)However, afterwards I felt really wet I am not sure if it was from me or from the individual. He assured me it was me and the lubrication on the condom. We even squished the condom to see if it was broken and nothing came out. I however, was worried maybe it came out of the top? The liquid inside me smelled like nothing. I was paranoid because I knew I was doing wrong. So maybe it was me, my own wetness? Then on June 21, 2015, I had intercourse with my actual REAL partner(fiancé) and we used a condom at first, he never finished as we were sleepy and fell asleep it was maybe around 3 am ( I am mentioning hours just in case that can help). When we woke up around 9 am, he entered me without a condom just for like no more than a minute and then he put on a condom. He had not gone to the bathroom all night or in the morning. Well again he never finished in the morning because I was too tired. On June 22, 2015 we had intercourse with a condom, he never finished. Then on Sunday, June 28, 2015 me and my REAL partner had intercourse with a condom and I was bleeding lightly, again he never finished. On June 29, 2015 we did it again without a condom this time and he pulled out before he finished, but some did fall on me. Then On June 30, 2015 I felt sick to my stomach. On July 2, 2015 I was supposed to get my period and I did not get it. Then on July 15, 2015 I took a pregnancy test and it was positive. I am pregnant with twins based on the ultrasound I had on July 16, 2015. The lady said I was five weeks pregnant. Could it be possible that the ONE night stand guy could have gotten me pregnant even though we used a condom? Or is my partner the one even though he never actually finished? My partner does not know I had the one night stand and obviously is happy I am pregnant and with twins. I however cant stop thinking about this and do not know if I should continue with the pregnancy as I already have two children and I am not sure if my mistake was what caused me to get pregnant by a man that is not my partner :(. My ovulation date based on online calculators say I ovulated on June 19, 2015. :( That would be two days before June 21, 2015 the day me and my partner had any contact. :( :(