So I'm scared

I haven't had my period for 2 1/2 months and I always have my period (close to same time every month) but still have yet to have one and my boyfriend and I have discussed having kids and he says he doesn't want any not even if we get married no kids ever not even one so now idk what to do I'm scared to find out if I am or not cause he wants 0 any advice will help thanks