I pulled my calf muscle 2 weeks ago, snow skiing. Lots of swelling and bruising, hard to walk/weight bear. I've been wrapping it in ace bandage after using icy hot. Went to my chiropractor a couple times and had e-stim and soft tissue work. She did ms testing by having me resist into pointing or flexing my foot and its was uncomfortable, but I did not have loss of strength. I developed a rash, little red bumps over the whole calf area 7 days ago. They don't itch or burn. Swelling is still moderate, I can walk a little better. Should I get an MRI, and what could the rash be?