It's up to you. If you want to get something to kickstart your cycle go ahead and call them now. They'll likely give you progesterone to start a bleed which will act as a hormonal reset. But do be sure you haven't had unprotected sex for 14 days and have a negative pregnancy test before using it.
Aside from a potential UTI (which may be a reason for a checkup anyway) it doesn't mean anything.