Incomplete Bundle Branch Block

Hello,
I am a 25 y/o female in healthy condition. I have been seeing a cardiologist for about 2 and a half years now. My brother died at the age of 21 of sudden cardiac death. Have seen two different cardiologists and an electrophysiologist. All EKG's, echo's and stress test are normal. Last week I went for a follow up with my cardiologist and she told me I have something called an Incomplete bundle branch block. She didn't state what side. She told me I had it since I've been seeing her and she just may have not mentioned it. She said its absolutely nothing to worry about. I want to trust her but knowing about my brother having sudden death worries me. Is there something else or somewhere else I should go for a second opinion or something else I should do?

Thanks.

[momtofourboys]

is your right or left BBB from the sounds I would have to say it is right sided. your doctor is right. my 4 1/2 (must not forget the 1/2) has had a RBBB his whole life. unless you start to show some symptoms, then you have nothing really to worry. i know it is easier said then done not to worry, especially since you lost your brother.I am so sorry for your loss.

Google bundle brach block and they have a lot of information on it about it.  acording to my sons cardilogist he has a complete bundle branch block and he does have symtpoms like different Hr and passing out with a low HR.  
a friend of mine almost lost her brother to sudden cardiac arrest. they thought he had a BBB he ahs a rare disease taht they found called brugada's syndrome.

I wish you the best of luck
Michelle