Can my vagina be too tight?

I had already been watching some porn and reading erotic literature, and I'd masturbated (almost?) to orgasm earlier. (I'm still relatively new at this, so I'm not sure if it really was or not...) Anyway, then I went to go take a shower. I started masturbating again, rubbing my clit and stuff, and I was definitely aroused-- my whole body, especially my arms, legs and stomach area, were hot and tingly, and I could feel my muscles tensing up. My breathing was speeding up, too. But when I tried to see if I could finally get two full fingers in my vagina, I couldn't fit them. I can just barely get two in there, and it's a tight fit. I definitely can't even begin to get three in. Is there something else to it? Or could something be wrong?