How long until I get concerned?

My husband and I have been trying to conceive for 6 months now. I’m about 7dpo today and have been tracking using OPKs , baby dancing like rabbits… (hoping this is our month) but if it’s not when should we start to worry a bit and maybe ask our doctor? I was thinking about 8 months to a year, but should I go sooner?

Everyone I see in my life seems to be getting pregnant in the first few months they try…