Leaking, maybe tmi

If you have a slow amniotic leak, can it replenish itself? Was having rough sex a few nights ago and heard a loud pop. Ever since then I've been a little more wet then usual and am starting to get a little scared. Dr can't see me until my appointment on Monday. 21 weeks, the only pain I'm having is in my kidney areas from not drinking enough (I go through that alot).