Cannot have an orgasm

i've tried every position and still cant have an orgasim. I'm on bc for not being regular. I'd go 6 months without a peirod. but i want to have an orgasim. is there anything i can do? or is there a problem with my body. i have skipped birthcontrol for a while while trying to have a child and i cant get pregnant. I still bleed using bc so idk what the problem is. does anyone else? :-( :-(