Hi guys, I contracted pneumonia 3 weeks ago. Within that time I've been in A&E twice but they let me home on Christmas eve. In that time I had 2 lots of drip antibiotics followed by oral Amoxicillin and clarithromycin for 2 weeks. Although I was feeling a little better my heart rate was still racing and oxygen levels were below 90. I am just on my second day of doxycycline for a week. Heart rate has come down below 100 and oxygen levels are slightly up to 90-92. Can anyone tell me when these levels will start to get back to normal? I am kind of relating my exhaustion and heavy weak legs to my oxygen levels, it has been the worse illness i've ever had in my life bar none. My eyesight has become worse since this illness also? Thanks in advance, Neil.