Hi my daughter is 21 years old and has been compalining of a stange vibration/fluttering in her chest and has difficultly taking in breath with periods of dizziness and feels faint, she has also been taking alot of exercise lately but finds she has to slow down due to not being able to take enough breath in and also has a very rapid heart rate during exercise and also sometimes at rest? She also gets periods of feeling very tired for no apparent reason and has had her feet and ankles swell and also stomach bloating not sure what going on.