Does your heart rate increase as you take a deep breath? (heart problems, help?)? I have a heart condition, undiagnosed by a cardiologist as of now, but my regular doctor has said that my heart is having contractions, or just contracting. almost a year ago, it happened maybe twice a month today it has happened over 15 times, and two of the times were different. they were stronger, and longer, and almost painful. i was out playing soccer. and i have been in bed now for a few hours, but it is still happening. and when i take a deep breath, it seems like my heart rate increases significantly. im worried.