I recently started my injections, this would have been my fourth one, I have been doing it in my upper butt cheek, this time after injecting I noticed about 12-15 hours later a large swell in the area i injected in, there is no redness, just a large Bump i would say with some paint, it feels awkward to lay on and i have been constantly massaging it, it hasn't really gotten better, i injected about 2 days ago. does it have anything to do with the needle, i might have moved it a lot when injecting.