Getting stressed.. ?

Natasha
So my husband and I have been TTC #2. My fist child is almost 11 so it's been a long time... And he was not planned. But we've been doing everything to make this happen: checking CM and using OPK, etc. Last month my OPK never showed positive results, but I thought maybe I used it wrong. This month no positive results again. I've got a couple of days left, but I'm starting to worry. Advice?