Hi all, I'm new on here but want to get some advice. I'm trying to conceive and have been using the OPK, I did one on CD16 and got a faint line so we DTD that night and I did another on CD17 and it was positive and I was also getting a dull ache on my left side abdomen so we DTD that night as well. I'm wondering do you think I would have ovulated on CD17 or should we have DTD on CD18 as well. Any advice is appreciated. We also DTD on CD13 so 3 times in the fertile window. Really want a baby been trying for 2yrs 