why is my chest so sore?

ok so I am a 22 year old guy I am very healthy and I exercise alot. Ive been kinda stressed out the past two weeks and Ive been working out a lot but not more than normal and last week I went to work and at like 3 in the afternoon my chest started hurting.I can press on my chest like it’s sore in the middle. it’s not heart related cause I delt with this before and I had every test in the book and despite having high blood pressure and being overwieght that was all that was wrong. Ive since normalized my blood pressure and lost about 60 to 70 pounds. my doc says im healthy and he’s proud of me. it’s just these chest wall pains arent shooting pains they just hurt cause they are sore. what can I do to treat it and what can I do to prevent it?
basicly i used to get this several months ago from stress. it went away for a long time then just reappeared this past week. it's a sore tingling feeling I get in the middle of my chest and it seems to keep coming back everyday since it started up again. it just kinda fades in and out all day but doesnt really start up till i get movin.

well when this happens to me sometimes I lay down and take deep breaths to try and ease the pain away, I don’t know what the pain is from but I do understand how badly it can hurt. so maybe try this and see if it helps you. good luck to you.