I feel it in me the whole time is it too much pleasure or just my imagination?.sex question!!?

so i have berly started being curious about having an orgasm and the pleasure. i have been rubbing my clitoris and seem to get a pleasureable sensation /feeling as if i have to urinate then i want to rub harder and i get a crazy feeling of warmth throught my whole body and after that i feel my vagina very sensitive is it a orgasm?