ppl need to learn to shot that shit in your up glute not your leg! Take omna you can bang 2ml in your leg and never know you shot it...Test -e you got 3 days for it to stop hurting easy...I dont care if yea warm it, shoot it slow,rub heat it....But if your geting lumps you need to shot it slower and stop 2 or 3 times depending on how much your banging.. As for the knee swollen, never heard or have i seen that happen shooting in your upper thigh i dont think thats related...But stranger things have happened...