I injected in my left shoulder 4 days ago, will i be straight to inject in the left shoulder agian, or change it up. I tryed my right earlyer and i dont think my muscle was relaxed so it started to twitch. I took out the needle and replaced it with a clean sterile one. Will i be fine to inject that, or did i waste a full cc of test?? I dont want to risk infection if i use the same body again.