hey just wanted to ask I have recently change alternating steroid injection sites from the delts to the thigh the second last shot I did my leg sweel up and bruise from the knee cap up the thighs and it change color from red and orange and today I swap legs and did the bilateral thigh muscles, as I was injecting the gear, blood was drawing back into the syringe not to sure why that was happening , got a major cork in my leg and heavy coffing after some advice would be good