chest pain

I am expeirencing chest pain when i breath in deeply and sometimes not even that deeply.The pain is in the lower part of my chest just under the pec muscle.the pain increases alot if you were to press on the area directly.the pain feels like a tighting in that area and cramping like feeling. i was training alot of my chest push-ups dips etc. but never felt pain while doing the exercises not till the next day.  I was also doing alot of situps including russian twists etc.i also smoke which is rediculous i know and i am concered about well you could imagine. i had a real smokers cough for a while where i couldnt  even get out full sentence without coughing, anyway the cough got a little violent sometimes so i wondering if i hurt my chest from coughing and or working out. Maybe the problem is from my lungs etc. but i had a chest xray 4 months  and the dr said the lungs were clear.etc.i had some of the same symptoms execpt now the are alot worse.

[star queen]

Your symptoms are not specific, but any chest pain should be checked out.  Chest XR can show many things, but not heart pain.  An EKG would be advisable as a baseline test.  If anything else shows up the doctor will follow that up.  Don't delay this.