ORGASM HELP

I am fairly new to the whole sex thing (around about 9 months) I love when me and my SO have sex and I really enjoy it, I get pleasure from it and feel it makes us closer. However, I have never orgasmed and I don’t ever feel like i’m going to. Any advice? Side note : I don’t masterbate or anything as it doesn’t seem to do anything for me, I have little pleasure while doing it never mind actually orgasming! Do you guys have any tips on how to reach on orgasm or what you guys do ? (when i’m on top i get a tingling feeling in my legs and in my lower stomach, it’s kind of like intense butterflies but i don’t know what that could be)