Can I get pregnant if I haven't had my period in 3 yrs?!

Hey girls I've had a regular period my whole life until after I had sex for the first time (16) and after that my period hasn't been regular now I'm 19 and me and my boyfriend are talking about having kids later in life but I'm just curious and a little afraid if I can even have kids I do have discharge though a lot so I am a bit nervous 😕