I don't think that it would hurt, but I don't think it will help either. Your vagina does a really good job of keeping itself clean and sanitary, that's why you have all sorts of mucus and secretion. The vaginal secretions will probably do the job that the jelly would do, and probably rinse out all the jelly too.
As far as I know, though, it would be perfectly safe. The only reason you aren't supposed to put oil based things in your vagina is because it breaks down condoms. If that's not a concern for you, don't worry about it.
Your vagina should do a good job of healing itself. If it's not, I would be a little concerned. What did you do? Was it a sex tear or something?