Today I took some benadryl because Ive been coughing and sneezing a lot this week. ive never taken it before. a few hours later, i can barely get off the couch due to extreme muscle pain throughout: my left shoulder, left arm, left collarbone and left side of my neck. I’ve also had chronic shortness of breath pretty much everyday for the last two years. I’m still in a lot of pain..and Im ONLY 22..What is going on? and what should i do now?