I am a-32-year old female. Recently, I am feeling a sort of uneasiness below the collarbone and quite in the middle of the upper portion of the chest. Initially, I thought it was a spasm but I have it for more than two weeks and feels little heavy deep inside. Kindly let me know the problem. Sometimes I feel spasm during deep breathing or while sleeping in the side positions. Currently, I am taking prenatal tablet one per day.