Kegal help

Laura

I am only 22 years old, no baby or anything. I used to be able to clench my pelvic muscles when orgasming but for about years now, I literally can't. I've tried doing Kegels and literally my pelvic floor muscles will not clench. By butt either will or my lower abdomen will tighten and thats it. I don't know what to do and if they is something wrong with me physically or psychologically. Any tips or suggestions?! Please help!