Infertility..? Or Not Meant To Be...ASF THO!?

Okay I’ll be blunt I smoke weed frequently and me and my boyfriend have been together for almost two years and although we have not been trying to have a baby (we are very young) we dontnormally wear condoms. I normally have white discharge throughout my whole cycle until I get my period (I know that is considered to mean ur not fertile) but he has came in me SO MANY TIME ITS NOT EVEN FUNNY, on ovulation days am all and by this time I figured I would be pregnant with some triplets by now but I’m not. I had an abortion a 2 years ago (pill) didn’t really stick with the birth control after. I’ve also seen my Gyno because I do experience dryness sometimes idk if it from the smoking or my poor diet (I lack lots on calcium and vitamin D and all that stuff) I’m only 19 Turning 20 in 4 months and im not looking to have children but I’m soooo concerned as to why I’m not pregnant by now like I said I’ve had an abortion when I was 17 just turning 18 could be a reason but idk please help I know it makes no sense I’m just trying to pinpoint what exactly is causing my infertility 😭😪