So after a quad injection I have a blotchy patch of redness right beside the injection site about 48 hours later... it isn't painful beyond what my normal injection pain has been and the post-injection pain has been dissipating as normal nor is it swollen/raised and I have no fever but it still concerns me a bit. Is it likely I just didn't go deep enough or should I be weary of infection? I have been massaging the area for the past little while which generates no discomfort as well.