Is sudden stress a possible cause for backache followed by chest pain?

Yesterday afternoon I started having a very bad backache in the right side. It first felt like a muscle pain, but today it started getting worse with my breathing, and it did not feel like a muscle problem any more. Slowly it migrated to my chest, and now my back is fine, but I have a bad chest pain in the right side, which is very obviously worse when I breathe in. A day before it started I had been in a very sudden, stressful emergency situation for around 20 minutes, and even though I felt I was handling it calmly, and definitely did not panic, I am wondering if pains of this sort that persist for days may be induced by a sudden stressful situation that only lasted twenty minutes. I do not have a stressful lifestyle, this was one isolated case. I am generally healthy, and the start of the pains coincides with this life changing experience, but I don't know if this is a common thing, or I have another health problem to worry about. The pain temporarily gets better if I apply pressure and mage my chest. Has anyone experienced back and chest pains following a sudden stressful situation? Do you think this is the probable cause?