Low heart rate and palpitations?

[Sarahlucy12311]

Hi guys. So to start off I'll list some background info. I'm a 21 year old, female. I'm 175 and 5'4... yes overweight. I did weight 195 but I've lost 20 pounds and still trying :)
Well I've noticed for a while now my resting heart rate is always lower than what the "Norm" is, usually within the 50's. When up and about my heart rate does goes up within normal range and over 100 if very active. Currently it's around 55.
I do not really workout so therefor I'm not an athlete.
Other than that I will occasionally have palpitations. There isn't a certain time, emotion or activity I'm going through when they happen. It's sporadic.
I'm very concerned about this. :/ I've talked to my dr and had blood test done to check thyroid, cholesterol, RBC& blood sugar count. All came back okay.
I've expressed my concern and I'm waiting for him to refer me out to a cardiologist:(
I'm super nervous I could maybe have sick sinus syndrome and need a pacemaker since I'm so young.
What's your guys opinions ?
Does anyone also know the life expectancy of someone with sick sinus syndrome and a pacemaker ?

[achillea]

OK, I'll go out on a limb here and propose that our basic heart rate is inherited from some parent or ancestor.  There's no proof of this, but some historic and empirical evidence.  The basic issue is a question of whether this heart rate, be it slower or faster or more irregular than 'average,' is capable of supporting what we would consider ordinary activity.

If, in spite of our odd sensations, such as irregular beats, can we do our ordinary activities, from walking from one point to another, up stair cases, even jogging to catch an errant child, and can we do it without signs of heart disease.  That is, do we become disabled by shortness of breath?  Do we faint?  Do we throw up?  Are we drenched by a sudden *cold* sweat that drenches our clothing in an instant?  Do we feel as though an elephant is sitting right on our chests?

If not, then our hearts are probably functioning OK, no matter how weird our descriptions of our sensations may be.

[jimgreg]

on your hr they always go by your resting hr..mines low too.its 55bpm.wile asleep 48-50 bpm.if i,m not in shape and walking 3 mph mines 110bpm.but after i get use to it.drops to 98bpm.were both below 60 bpm bracardia.if your ok with low hr. then ur good. Same with me.i seem to do ok with  this way 30 yrs..i also get the heart skips. Today not to bad..i bet you have a hard time planning things..