you are definitely overweight
and sufferring from borderline hypertension
or pre hypertension.
That chest wall swelling may be gynecomastia
usually seen in obese persons.
Dyspnea and palpitation
might be related to your heavy weight only but in my opinion
you should undergo some base line lipid profile
, ECG, ECHO and if required TMT.
this is the right time for you to start life style modification..
1. Reduce your weight and maintain BMI around 23
2.reduce saturated fats, salt, junk food and increase part of fruits and vegetables
3 daily 30 min. brisk walk or aerobic exercise
I think in place of getting worried wake up and start workout because today is the best day to start with.
Wish you a healthy life