I would get a £15.00 Pulse Oximeter. This proved I had a complication of Covid with low blood oxygen levels. You may have a smartwatch that measures SP02, where you will want to see between 95 and 100.
If you do measure and go below 92, get advice from 111.
It is likely based on the stats that you will be ok, but the 2 big gateway complications Covid Pneumonia and Covid Pnemenitis (which is what I got) sneak up without the host knowing; so the SATS reading on the meter / smartwatch, for me is essential - Government should be communicating this.