Is it possible to get a positive OPK and not ovulate??
I'm not sure. With my PCOS, my understanding was that my body could go through the motions of ovulating, but the egg wasn't maturing enuf to be released/fertilised. So while I had a semi-regular period for a while there, chances were I wasn't ovulating properly.

Sorry... don't want to scare you with that! 8-[

Like Emma-Jane said it can take a healthy couple 6 or more months to concieve. And specialists won't usually see you until you've been trying for at least 6-12 months either.

I've read that reducing alcohol and caffeinne can improve fertility for both you and DH. My poor DH went about a year without his coffee (bless him hehe). Of course now we're pg he's back drinking his coffee & beer. It's alright for him! I'll be off all that for the next few years probably! hehe.

Try not to stress too much, as that can affect ovulation too. I'm sure you're doing nothing wrong. Hope you catch that eggy soon!