Is there something wrong with me??

I have never been able to orgasm. Not from myself, or any of my last boyfriends/current boyfriend. It's like no matter what I do I can't do it. I've tried a lot and practice but it never happens!!! Sometimes I feel like I get really close but then it goes away and I feel like it doesn't come back. Idk. I'm just kinda sexually frustrated and want to know what it feels like. Does anyone have any tips? Or insight maybe?