I'm a teacher and have experienced similar.
I started coughing at work on Monday and was sent home.
I spent the rest of Monday and Tuesday morning trying to get any sort of test - no walk in, drive through or postal tests available.
In order to establish that there aren't any, you have to go through the process of entering details and answering questions, which I must have done hundreds of times.
Lunchtime Tuesday I was offered a drive-through test a four-hour drive away (8 hour round trip) which I didn't take.
Mid-afternoon on Tuesday I got a postal test.
It arrived at 8pm on Wednesday so id missed the post.
Posted it Thursday. Still waiting for the results on Monday morning.
I rang the helpline yesterday. I was on hold for 90 minutes to be told that they had it, but that they weren't able to see how far through the process I was.
So, seven days after falling ill, and missing my sixth day of school.
Not to mention that, if it's positive, everyone I've been in contact with, including my colleague and class, are carrying on whilst potentially infected and spreading it.
It's quite obvious that testing has collapsed since schools went back and demand increased but surely that was forseen? What happens when universities go back?
Schools will be forced to close if they haven't got enough staff to open safely.