Hello, I have been experiencing the same thing you have described here. Mine started out very minor last year and have slowly gotten worse this year to where it is quite often actually. I know how scary this is!!! I went to my doc and he did the echocardiogram and said it was normal. Well.....la di da!!!!!! I don't care that it was normal ...cause it is not normal that someone has these kind of symptoms and doctors should go further with their testing instead of just stopping right there. I am so fed up with docs that I don't know what to do. None of us should have to be on here trying to dx ourselves but just look at us!!! Anyway, I think mine could be due to my vitamin d defiency or possibly an std even though all stds come back negative (I am not convinced). Have you had both of these things checked ? If not you should!!!! keep me posted!!!!!!
Hi. If you had mitral valve prolapse they would have seen it on the echocardiogram. Do you have a copy of those test results? You should get a personal copy of all your results to take to any new doctors you end up seeing. Here is a page that describes some of the causes of lone afib:
http://www.afibbers.org/atrial_fibrillation.htm
Many times they can't find a cause, however It could be dietary or due to a medication. Stress can cause palpitations. And yes it could be due to a problem in the heart like mitral valve prolapse, but the echo is the test to diagnose MVP. It could also be due to a medical condition not originating in the heart. Have you had blood tests? You should have your thyroid tested. Hyperthyroidism could cause both the afib and the palpitations. Hypoglycemia can also cause this, as well as electrolyte imbalances.
My suggestion is to see a good internist and get thorough blood tests. Also you should keep a symptom journal. Take note of when you have these palpitations and the symptoms that accompany them. When you have the palpitations, write down what you ate, any medication you took and what you were doing when it happened. Note as well anything in your schedule that was out of ordinary, like extra stress or lack of sleep or missing a meal. These notes will help you and your doctor pinpoint the cause.
On a side note: I get palpitations too with the symptoms you are describing. They are related to my migraines (we think) and so far are believed to be benign. I have also had afib when on certain medications to treat the migraines, but once I stopped the ineffectual meds, it stopped happening. Afib can be very scary. Many people get palpitations and the cause can't be determined, but it's nerve racking never the less. It doesn't necessarily mean something is wrong, but it's important to rule out medical problems. Good luck and try to not add anxiety to the mix. This will make diagnosis more complicated and exacerbate your symptoms.
Im not a doctor or anything but it sounds to me like you have mitro valve pro lapse, which is somewhat common. I have this and have all the symptoms that you have listed. Even though it is an uncomfortable feeling it is not something to really worry about, as I have been told. Look it up on the internet to read more about it, take care:)