i injected in my glute a few days ago and under the injection site i got a smallish hard lump and it hurts when i touch it or sit on it etc, the site is slightly red, more pinkish, not bright red at all, i been injecting in my glutes for 11 weeks alternating between cheeks for the twice a week injections, i used a 20g 1.5" needle and i made sure to make sure the site was clean etc. the lump feels kinda like a bruise under the skin, has anyone else had this before?