14 months later... no orgasms

so ive been with my boyfriend 14 months, love him to absolute pieces, but he can’t make me cum

we have sex in almost every position you can think of, and we’re both pretty kinky people. in 14 months ive had maybe 3 or 4 orgasms?!?! ive been lying the whole entire time though, and i feel like the worst person ever. i feel like it’s waaaay too late to tell him this now, what on earth can i do ?!