I am a 28 year old female, in overall good health. I have felt that something is not right with my heart for a while now. I started getting a lot of palpitations about 5 years ago. A doctor in the ER said I have a heart murmur. I wore a heart monitor for 72 hours, only showing periods of bradycardia as low as 42 bpm. I am always very aware of my heart beating. Sometimes I will feel like my heart skips a beat, then I won't feel good for the rest of the day, sometimes lasting the next day also. It feels as if my heart is weak. I have also experienced some pain just left of my sternum, at about the 3rd intercostal space. The pain is sharp, but mild, and only lasts a second of two. Then is goes away and comes back in about 5 minutes. In the last month, I have experienced 3 days of this, lasting all day. In the last year, sometimes after orgasm, I don't feel well, again as if my heart is weak. This also can last all night sometimes until the next day. I had an echo done last year, which was normal. I told my PCP a few months ago that I am afraid I may have an arrythmia at times. He says a lot of women like me with abnormal hormones (my body make almost no progesterone and I take it topically now) complain of the same feeling. He also has me taking a very large dose of fish oil daily, which helps. What could be causing these symptoms? Should I see a cardiologist? Thanks for the help!