My DH and I BD-d at midnight on Saturday night without protection and BD-d Sunday, Monday and last night using the withdrawal method. I think I ovulated this morning (CD15). Assuming no sperm were released apart from on Saturday, what do you think my chances are of conceiving? I have heard various things relating to how long sperm can live. Does anyone have any advice? Just to let you know, we would be delighted to conceive, but aren't really ttc at the minute. IYKWIM!