Good day doc, I've been feeling this muscle pain in my neck and back, along with this, I'm also having this fever for 5 days now. All I did is just drink plenty of water then get rested in bed right after I came from my work (I'm also chilling doc, yet it's tolerable). Apart from this, the rest of my system is fine, I think. Anyway, I and my officemates came from a 2-day company tour/outing a day before I felt this. I'm just a little bit worried because I dont usually suffer from a fever. I'm recovering from the chill now but the mild fever is still there. I'm 26 y.o., female, 45 kgs,5'1" ...