Got a question...have done 4 injections in butt now, but after 3rd one, noticed that both sides are now red, hard, and hot. They aren't sore and the redness isn't just isolated around injection points - matter of fact, you can't even notice where the injection points were exactly. Using a 2 inch needle and only going in half way. Is it infected?? And if so, what can I do about it?