What Must I Do About Tingling And Throbbing Sensation In The Right Leg After I Injected Methamphetamine Apart From Blue Discoloration?

I injectioned meth into my leg on the right side.. Well it didnt sting but my vain looked like it was taking the shot but swelling up in the vain it did not hit now it is red around the whole area on the out side not to big looks like my color is turning blue and just getting darker blue its moving up and down my leg finally started moving all around my leg but hasn t got much bigger its tingly and throbbing right now