Hello,Mr.Anthony.
Thanks for posting the question to H.C.M.Forum.
Pain in the chest is from the last 3-4 days, assuming that before you were fine.
Acute reason is there.
Here are two possibilities as,
1 Due to hyper acidity and
gastritis i.e
esophagitis ( inflammation of
esophagus due to some irritant substances as beverages ,fried food,over eating,spirit (alcohol).
As you said when you pressurize sternum (lying down) pain aggravates because of this it become more irritate hence pain.
2
Chondritis in your case is not fit. In this disease there is pain in sternum and costal margin.
So please avoid irritant substance in your diet and some local
anesthetic antacid will give you relief.
One more reason of this disease may be-----Tension i.e anxiety if severe,it develops this type of symptoms.
Hope I have answered your query.
Wish you a good luck. If any further question is there I will be happy to help.
Dr.HET