I'm going to tell you the thing that I HATED hearing during a total of 5 years primary and secondary infertility. Stop trying so hard. I know, I hated it when people would say that to me... b/c when you want so badly to be pregnant and you can't then you just want to smack someone when they say that to you...especially if the someone is able to get pregnant just by looking sideways at her hubby.
anyway, we started trying when I was 26 and I got pregnant right away but we lost that baby at almost 13 weeks. Then it was a year of trying before my doc would "look into it" then it was over 2 more years of every test in the book including exploratory surgery to check things out..3 failed clomid/IUI cycles before my doc threw up his hands and said..there's nothing wrong with you we don't know why you can't get pregnant. I think NOT finding anything wrong is harder than knowing what the problem is...b/c we just didn't have any answers...so after over 3 years of a total emotional and physical roller coaster where I literally lived my life 2 weeks at a time waiting to ovulate and then waiting to test, and it taking a very hard toll on our marriage..I sent DH off to work one morning and had a very long talk with God. I gave up on doctors and tests and procedures and told Him that if it was His will then I would be okay with it. That morning was the first time I felt at peace with the entire situation. The next day we started looking into adoption. A few weeks of us "not trying" went by and I realized I was late. Yep...that's when I got pregnant.
With number 2..DH had been deployed for a year and DS was 16 mos old when he got back...so we started trying right away b/c by then I was 31 and not getting younger. I tried not to get back into the frame of mind I had been with DS but it was hard. Still after about a year I tried a few cycles with clomid and then when we hit the 2 year mark I just let it go..I was just convinced that we would be a family of 3 and I was really at that point okay with it so we stopped actively trying. Then DH got activated for another deployment...then I found out I was pregnant.
so long story short, I let it go and both times got pregnant all on our own. I know it's hard though..I've SO been there but it will happen for you I just know it!