Hello, wondering if this pain I have is costochondritis....about 2 months ago I had 2 separate colds/ sinus infections that needed antibiotics ( within 6 weeks of eachother)..alot of nose blowing, coughing, netti potting etc and I'm wondering if thats caused some kind of chest flare up of some sort..I don't know of if indigestion or costochondritis..pain is sometimes on the bottom left side of my breast, but always seems present In the upper part of my chest. I get the occasional pain in my sternum as well. My chest can be painful to touch in certain spots. Had physio and was told my pecs are tight and weak. I'm going to the dr on Wednesday to see what's going on....does this sound like costochondritis??