I took a good jolt of electricity during a Tough Mudder event on 19 Oct. Hard enough that it knocked me out. While falling, I scraped my face across hay bales and got cut up, but I also jammed my neck upon hitting the ground. I've worked through all that, but every night I wake up with shoulder pain (both shoulders). It's like my muscles are severely fatigued. Is this normal for almost two weeks after the incident?