Losing hope

I got off my Bc last June. In November i started using opk tests. My cycle is pretty regular. I have an lh surge every month. No endometriosis or PCOS. No history of STDs or PID. It just hasn’t happened. I am 99% sure that may 23 i ovulated. I took two opk tests on the 24th within 25 mins of each other. The first was positive, second negative early in the morning. I just started taking my bbt and I am fairly certain that my temps agree with that. We are trying for my first, my husband has a 10 year old son. I’ve been trying to not stress and just kind of let whatever is going to happen, happen, but I’m 34 years old and I’m scared that it may not happen. 😔 any insights?