19 partners no orgasm ?!

Tiffany
I'm 25 and I've been with multiply people... 19-21 too be exact.. Well all my girl friends talk about how they have orgasms and I have never had one!? Is it me?! I can give myself one with a clitoral stimulator but that's it! No orgasms durning sex and I'm getting so frustrated! Help!? Also now I have a steady bf and he is great at sex and it feels amazing but still no big O :(