Yes and no. Yes, you are multiorgasmic because you had multiple orgasms in one session. Yay! Congratulations! You're on top of the world!.. and no because you ejaculated. Ejaculation eventually ends sex. You're young, 18-24, I guess you're 19 or 20. Younger men commonly ejaculate once or twice without losing the erection. Older men, not so common.There's another way to have male multiple orgasms, it's called nonejaculatory male orgasms NEMO), tantric sex, dry orgasms, etc.. Men can have the same orgasms without ejaculating and thereby retain mojo (sexual power and erections) and have several orgasms. There are many books on the subject. IMHO the best one for teaching men how to do it is called Love Satisfies, by Keepitup Johnson.