Yeah good call Golden! After 1 yr of trying Drs only investigate then, im sure you both are perfectly fine & its all about timing, took us 6months nearly to get Riley & the first month i did bbt i got pg, i was only going by opk's & was ov'ing diff days to what opk was saying it seemed & we just werent active enough, that being said, sometimes if an eggs released & its not a very healthy one or annovulatory cycles here & there, looking at my last 2 charts only diff from last cycle to this is we had sex 1 more time & that did it! No doubt your ultrasound will all be clear hun, im suprised they didnt just give you Clomid to give your ovaries a boast, they still may well do, ooh poss multiples hehee!
My opk's are just cheapy ones from a cheap toiletries shop but they were pretty good, better than the pg strips they sell anyway.. My ones were called Clear and Simple, you can probs get them online aswell..