"Normal" O2 sat is 98%. Docs don't really care until it drops below 96% and some below 93 or 94%. You and on the cusp and should talk to your doctor about this sometime this week. Hypoxia is not an issue until the mid 80%'s, so you are ok for now, but it does sound like your meds need to be tweeked.
Take care and feel better.
MZ means you are a carry of alpha one antitripsone. I am also one.
If you don't smoke you will be OK. If you smoke you really have to stop.
If you have children they can also have it.