your opinion needed!!!!

I'm 32 and have two kids 13&14. had no issues getting PG back then. didn't try to PG for all those years after these two, all went natural ie no pils or any other stuff. now we both want a baby but no results for the last 4 cycles. is this means there is something wrong? like age or something, or still need more time? I know my O and doing our "home work " at the days closely to O. any comments ladies? should I go to docs or just have potions!?