I am 18 and have found this weird feeling very recently. Basically when i apply a lot of pressure to my vaginal opening, i start feeling these waves of vibrations around my pelvic area, if i keep pressing with more pressure it gets more intense and then finally i feel my vagina twitching and kinda 'letting go', if that makes sense, it feels like it's convulsing inwards or smth. I don't even have to take off my clothes to achieve this. My toes and hips kinda twitch. I feel a little twitch in my throat too. After that i feel too exhausted to try doing that again. It barely takes me a minute or two to do this. Ik this is super weird, but if it's an orgasm, is it a vaginal one or a clitoral one? It does feel really good tho, but lasts only for a minute or two.

For the record, I've tried simulating my clit several times before, but i feel nothing. I never tried fingering either. This is the first time i think I've felt something remotely close to an orgasm, but I don't think one can just achieve an orgasm just by pressing their crotch hard?