I Was In Hospital Three Weeks Ago And Had Blood

I was in hospital three weeks ago and had blood thinner shots I also has a insulin pump. I had a lg jump from injections in hospital . with lg brush area. I was rubing it and then it became larger and has a rash and very hot and now all of my injection sites from insulin pump look the same way and even other shot areas on my side from hospital look the same , red hot, rash itch