I am 33, female. Last Tuesday I did several lunges exercises for the first time. It was a very hot day. The next day I was sore and it was even hotter out and I didn't really rest. The 3rd day I became nauseas, with headache, and got a fever that night of 103. My fever has come and gone over the past 3 days. I have a bruise developing in my groin area from the lunges I'm assuming. But also, my jaw has swollen on the right side to the point where I can't chew or open my mouth very wide. I've been taking lots of fluids and electrolytes, Ibuprofen & Tylenol on and off. Could these be related injuries?