When you say ejaculate, do you mean have sex, or do you mean even ejaculate by masturbation?
Is it just an urge, or a compulsion? What happens if you don't find an outlet? Can you just masturbate?
A few weeks isn't a long time, medically or socially. Do you think this could be psychological? While the experience of sex and masturbation are very different, a lot of the same hormones are released, so masturbation should help ease some of those feelings.
Do you do anything harmful, to yourself or anyone else, if you don't get to have sex?