My ex-girlfriend told me that she was pregnant. It was a time that we were broken up but on and off. She claims it was from the last time we had sex which was on october 28 or 29th and the due date was july 29th. She was induced a week early july 20th since the doctor said the baby is developing very well and is at a good size. I was worried that staying in too long would be harmful which is why the decided to take him out early. Though she’s maintained that she was never with anyone else I have had some doubts. Recently I looked at a conception calendar on a paternity website and it said that with a due date of july 29th the most probable date of conception is november 6. Does this mean we could have still had intercourse on the 28/29 of october and gotten pregnant from that? Also, she knew after 2 or so days that she was pregnant. I know this is possible but doesn’t it usually take 2 weeks? I heard of some women knowing very quickly that they are pregnant especially since she already has 2 kids. I know the best answer is to take a paternity test which I probably will, but looking at this situation that I just explained: does this sound weird?