I had the same issues when I inject my glute. But I use 1.5" 23g.. or did... It is a pain in the... well... ass... but I just worked out through it. I just went through an abscess.. now have a huge hole in my chest, trust me, you will know if you have an abscess. I seemed to get lumps no matter where I injected o.0... but they all went away, just rub it, give it some heat time to time, and stretch a lot, that is what I did/do and it was fine.
But again... you WILL know if it's an abscess for sure. Although, the fever and stuff, doesn't necessarily happen. I never got one, I had the painful as hell lump for about a week, and the redness for almost the same time, I just thought maybe it was irritated. When I finally did get ill, it was almost a week later, but I had no fever, only cold like symptoms. I got unlucky as well though and had the abscess with cellulitis, I got hit double time.