Timing?

miss2697

Hi, ladies. I had read somewhere that if you have sex 3-4 days before O, you are just as likely, if not more to conceive. According to FF, I O'ed on day 75 and we had sex on CD 71. I also had watery CM that day. This is my first time charting and I started pretty much in the middle of my cycle because I had no idea when AF was going to come hence why our timing wasn't so great. I am 6 DPO and starting to finally experience what I think (and hope) are period cramps or better yet, a new resident. So my question is, has anyone conceived 4 days before O?