I've been dealing with this dry cough and random discomfort all over, like in my chest, pelvis, and abdomen. These discomforts just appear and disappear, and they don't usually last long, except for my chest, which lingered on two occasions. Also, I've been feeling this slight ache in my shoulder and lower back for about a month now. Just wondering what's going on with my body? Should I be worried, or is there something I should do to make it stop?