So I’m 24 and my husband and I are on cycle #5 of TTC for baby #1

I have never been on birth control. Before we started actively trying, we just relied on the pull out method. Since cycle #1 I have been using OPKs. I have regular 28 day cycles and ovulate CD 13 or 14 every month. We BD leading up to ovulation and then a day or two after. I just don’t understand why we haven’t had success yet. I am very healthy and had a pre conception visit where my Dr said I was perfectly healthy.

Is there any way that I could be getting a positive OPK and an egg doesn’t drop? I know that a husband’s sperm can also be the issue. Has anyone been in the same boat that can offer some tips or advice?