Is there anyone else TTC that has reached the point they're sort of "if it happens; GREAT! if it doesn't I'll be sad, but oh well"?

We've only been TTC about six months with no luck but he's almost 40 & I'm 37. we already have two kids in MS/HS.

I had absolutely NO trouble getting pregnant the first 2 times.. I was off BC for less than 2 months when I got pregnant. any advice? 😔