I am a 46 year old female with Fybromialgia. I work full time in the recreation dept as a programmer I have been under a lot of stress lately at work by now most of my deadlines are past. I have run 5km races and 10 km races for the last 4 years but was injured in the start of the year and had to stop running. I am slowly getting back to it. For the last 3 days I have been experiencing chest pain on e right side. The pain would come in waves. It was suggested that it may be a muscle thing and indeed to stretch more. I started doing that yesterday but it doesn t seem to help. Last night it started getting more painful.i didn t sleep well. I woke up once with pain and of course am anxious now that it s a cardiac problem. The pain has become worse but still comes in waves not constant. They are closer together now. I was having what I thought were palpitations and was given a stress test and heart monitor about 2 years ago. They told me that what I was feeling was a common problem that many people have but most don t feel it. They said it was just an electrical misfire and not to be concerned.