I can’t orgasm because of antidepressants

I can’t orgasm because of antidepressants and it’s sooo frustrating. i’ve (F21) been dating my bf for 3months, i was a virgin before him so i never had this type of experience, he’s very experienced and very very good. intimacy is pleasurable, i really enjoy it, but no matter what we do it’s so hard for me to finish and it’s stressing me out, and i can see it’s stressing him out too because he thinks he’s not pleasing me, which is not true because the sex is very great, i just wish i could orgasm sometimes. i’ve been on antidepressants since i was 14…
any tips?