Thanks for all the advice. It's all been a bit weird. Started getting the bad chest on a Sunday and deterioated very quickly, being stupid though I didn't go to the docs until Tuesday. I was given 1 dose of antibiotics and told I should improve in 48hrs. 48 hrs later I was even worse and had to get family to drive me to gp's. Was just told I would be Ok and to start taking another antibiotic and is be fine. Had a couple of very scary nights where I came close to calling an ambulance but thought GP knew best.
Antibiotics did improve things to the extent I didn't need to actively think about breathing. However 2 days later antibiotics finished and I began to deteriorate very quickly over 12 hrs. Back to a different GP who was a lot more concerned and actually took some stats resting pulse was 120 (normally 60) oxygen saturation 95 and repertory rate 33. I am convinced the same stats a few days earlier would have been much worse. Anyhow straight to MAU at hospital. To be fair compared to some with Pneumonia I walked in (just) and wasn't on deaths door,.but both the GP and close Dr friends al agreed that IV antibiotics would be the best course. Especially in a fit normally healthy 37 year old.
A farcical 10 hrs in MAU led to a consultant seeing me just before his shift finished saying that although my stats wern't great and a blood test for some thing or other had come back high, he was going to send me home with yet more oral antibiotics.
Back at the GP today as antibiotics finish tomorrow , and I havent improved that much. He's put me on more antibiotics for another week and a big dose of steroids.
I just feel in another week I may be back to square one again...
Think I'm going to have to be careful once I start to recover after any illness I get the rebound of feeling full of energy, I guess in this instance I need to ignore it and stay off the bike for a good few weeks..