I've been around these parts for a few years now and sadly, have yet to complete one cycle. So I've watched my SDN "friends" complete, interview, accept, reject and/or matriculate through 3 cycles. Having watched it from a distance I can tell you you're not done for this cycle unless EVERY school to which you applied rejected you.
If you are on WL, don't sit still - find out if you can send update letters, see if you can get a chance to talk to the schools, don't let it sit... read the threads on here to find out how to max your chances of movement. Remember, at some point seats DO open up... DO NOT GIVE UP
If you have been rejected from all schools, remember this:
YOU completed this cycle. YOU stood on the doorstep of med school admissions cycle and now are fully armed to move forward into the 2018 cycle. Don't let parents, friends, family tell you how to feel.
Feel what you feel, then pick yourself up and celebrate that YOU did do something many more of us have not. In that, congrats yourself for a solid AND complete cycle, and figure out how to make this upcoming cycle better. More schools? Better written PS? Reframing II responses? But first, mourn, then move on.