TTC help

How young would you say is too young to talk to a doctor regarding fertility?

My husband and I have been ttc for about a year and a half/two years and nothing. May not seem like a long time compared to others on this app; however every female In my family has babies back to back left and right. Im getting worried and discouraged I guess.

As time goes by I tend to worry more that I won’t happen, my dad had heard that this 3-step vaccination (I can’t remember the name) had made my moms sister Infertile, 100% legit doctor confirmed. he took me in without telling my mother And forced me to get them.