hi,i took a pregnancy test, then i just went to the doctor on wednesday and they told me i was 3 to 5 weeks pregnant and my due date would be july 8th estimate. I was with my daughters father in july and the beginning of August nowhere past the 13th, i came on my period in july and august and we had sex only 3 times all together. Then we broke up and i met somebody else which is my current boyfriend and we got together around august 28th and we had sex sept 1-5th, because i came on my period on sept. 6th and went off the 10th of sept. then we had more sex a lot of sex we didn't miss a day then i came on again sept 30th this was my last period, when did i actually concieve im thinking the beginning of sept. somewhere between 11th through 16th of sept. i need help?