lung infection

when i went to my nan's last thursday i noticed that the air was making me feel uncomfortable when i breathed. then over the weekend i had more troubles breathing like when i was walking up the stairs at home, yawning, talking at my normal pace, being outside in the cold. and twice i had real trouble catching my breath.
when i went in to chemo on tuesday i knew i had a lung function test (i actually didn't until 6th of may but thought it was on tuesday) the test showed some difference since the last time and so my heam sent me for a xray.
then when the scans came back, she came up to me in the chemo suit and sent me for a ct scan. and called down my respiratory doctor to speak to me.
the possibilities where either i had an infection in my lungs (requiring antibiotics) or one of the chemo drugs were causing toxicity in my lungs (requiring steroids)
the radiologist couldn't decide which it was so i was put on both. two antibiotics since im allergic to penicillin. and my chemo was held off for a week to give my lungs a break, and from now on the drug that causes the lung toxicity will be left out of the chemo combo.