I was sick last week for 3 or 4 days, horrible stomach pain, nausea, headaches, congestion, sneezing, coughing. I had been feeling sort of okay before then. Yesterday was okay because of my 3 dogs and 3 cats. But ever since then, I have been depressed. I usually go on a bike ride, but haven't in 5 days. I also have very little appetite. Everything overwhelms me, talking to the mailman, the neighbor saying hi. My eyes feel droopy like I'm tired. I have been laying in bed since last week since I was sick. Does being physically sick cause a mood shift? Because this sure seems like it.