Haven't personally run into what you're describing, though I do usually get a brief minute or so of stinging right at the injection site. Tried it once in the softer area near my waistline and ruled that spot out given the extra burning and tenderness! Hoping this isn't an allergic reaction on your end and just an unlucky spot your body didn't take well to!! Heard bumping the dose can trigger new reactions too, was this a fresh dose for you? Just a thought, really hoping you're feeling better now with nothing further going on!!