pawl, best of luck with a speedy recovery, I will be watching your progress with interest. Three weeks ago I wore bib shorts for the first time, looking to improve comfort as I increased length and intensity of my rides. I have been riding for commuting for a number of years, but having turned fifty decided I needed to get slightly fitter in order to be around for my seven year old.
So after my first ride in the bibs I returned home and gulped down my pint of milk, this lead to a gripping pain in throat and upper chest followed by intense pain between shoulder blades. I had to lie down for an hour before picking my daughter up. I put it down to pressure from the bibs across my shoulders and pushing it a bit on the new bike.
After this ride I went on to complete my first 50miler and then a few days later my first 100km ride. Last week, two weeks after the initial incident I was out on a leisurely ride, although I did manage 41.4mph down a hill towards Redditch on the A435, I stopped for a drink and the same throat/chest pain started. I also experienced the pain between shoulders and pins n needles in my arms and hands. I rode on for a bit through Alcester but the pain got worse, bloody bib shorts was in my head! I stopped in the middle of nowhere and then decided to ride home via Henley in Arden. I realised I couldn't go any further and a WVM came to my help and probably saved my life as well as rescuing my bike.
Blues and two's to hospital, stent fitted and now off to see consultant to arrange triple bypass. All due to previously undiagnosed congenital heart disease.
I suppose part of my reason to post on your thread, apart from wishing you well, is to say don't ignore the signs any of you who ever feel odd when riding, don't blame it on the BIBS!
Nigel