Hi Pieman, thanks for your contribution.
I had a slight trace of a RBBB initially, but it became fully developed a couple of weeks ago on a routine ecg. I was referred to a cardiologist who had me do a treadmill exercise test. All this while I was in the dark about all these things. I found out things by browsing the web, looking for RBBB; all the things you mentioned were also discovered on the net. After I had done the treadmill test I was still in the dark about how I fared as the young doctor who conducted the test could not or would not tell me much, saying that my cardilolgist would give his assessment. I was also confused about the object of the stress test as the medical technician told me that they only wanted to see my cardiac performance up to 85% of my max heart rate, but the test took me beyond, up to 96% when I couldn't take it anymore and asked for the test to be stopped - I thought I had failed! But a week later my cardiologist told me that I had passed and that my heart is in good condition. I found out from him that although the object of the stress test was to achieve 85% of my max heart rate, they also try to reach 100%!!! If only I had been told this I wouldn't have been so anxious.
I hope by sharing this, others who come across similar situations would be better informed. Ours must be the most highly regulated and scrutinised profession in the world, what with 6-nonthly medicals, regular ECGs, chest X-Rays, audiograms; as well as the regular base-checks+IR, line checks; and FDRs and CVRs to keep an eye on our every move in the cockpit!