How long do you TTC before seeing a doctor?

Lindsay
I know everyone says to wait for a year of TTC before seeing a doctor? Did anyone see a doctor earlier? Just trying to get an idea of what to do. 
​I've talked to my gyno before and she didn't seem that concerned- but I turned 30 two months ago and wonder how long we should try before checking to see if we are both ok? Hubby is 32 and I'm 30!