Sorry to hear about your problem. The increase in your breast size can be explained due to the excessive exercise you are doing. This leads to increase in the chest wall muscles, which can be interpreted as increase in breast size. Exercise can also lead to hormonal
imbalance, which can lead to the warm feeling over the breasts.
It is best that you get yourself evaluated by a breast surgeon and also check your hormonal levels, which can explain the problem.
Hoping for the best.