Hey Oat. I just joined and after I saw your post, had to reply. I just went through the exact same thing last saturday. My left delt was extremely sore after inject, and also became red and swollen. I was a little freaked out too, but like u, no fever, not achey or anything, so I posted on pro muscle and guys said most likely oil didnt get directly into muscle and was left unabsorbed, and thats what caused irritation, but eventually my body would absorb it. They were right! I was sore and swollen almost a week though, so I wouldn't worry bro, just hang tough. Hope I put your mind at ease.