Pulling out

Used the pull out method on and off with multiple partners throughout my lifetime (all while in 4 serious relationships) and never had an STD (regularly got checked) and never got pregnant. I regret those decisions I previously made but now that I'm nearly 30 actively trying to concieve I'm worried maybe I wasn't just lucky all those years never getting pregnant and maybe I'm infertile. Anyone else used this successfully for a long period of time? I know maybe women get pregnant so I don't really need those responses.