I’m trying to conceive but I’m think I’m infertile!! 😞😰

I live with my boyfriend for 6 months and I have never had a delay in my period, sometimes I think I am infertile and that depresses me because I want a son as much as I do. I am also irregular so it is difficult for me to know when I am on "fertile" days. In fact when I’m in my period days I suffer a lot of pain the first two days. Someone help me, because this has created me a little depression!

Btw: Sorry for my English, I’m learning now! 😰