Pain and pressure in vagina during masturbation and sex

Hi, I;ve got a few questions and I was hoping someone could help me. See, whenever I insert a finger into my vagina, I feel like I'm pressing against a muscle or something and it's like I've got to pee sometimes. :$ Like, I feel the pressure and it's not enjoyable, it's just awkward. Is that normal? I'm still somewhat of a virgin so it hurts a lot to put even a finger inside, there was only one time in which I was fingered and i felt something other than pain. It was like a painful pleasure. I'm not sure if it's because I'm a virgin or it's somethign I need to see a doctor for. Does anyone else feel pressure, like is that normal???

Also, is it strange to have a hard time orgasming? When I'm with my partner, I'm never able to orgasm because it takes awhile. I don;t know if it's because I'm tense, or something isn't right. I'm not sure.

Could someone please help me? I'd greatly appreciate it. :-)