not sure i should ask here

me and my fiancée have been “trying” for a year to have a baby. we have intercourse when i’m ovulating and last month i never ovulated and my period was 7 days late. after my period ended, i had a week of happiness and now i’m supposed to be ovulating and i’m miserable and sad and the exact same thing happened last month. i smoke a lot of weed and had vaped for four years. i also have had eating disorders in the past. i’m scared that i’m infertile because of it or infertile in general and it’s scary because all i want is to be a mom. i have no idea about most of this stuff and i just want some advice im a little scared.