Clear instruction for high risk groups

i have scarring on the lung due to having had tb years ago, I am not ill, but if i get a chest infection i have to be very careful or end up with pneumonia, if i happen to catch this virus it could be fatal.
I was also told at start of this that i was high risk and to shield by dr, now i'm told i am high risk but not exremely high risk, this dr thought i should shield but government guidelines now say only extreme conditions to shield.
Very very confusing, do i stop shielding and go back to work knowing if i pick up the virus it could be fatal?

Those of us with high risk underlying issues are confused and scared, and need clear instruction on where we stand when lockdown measures are starting to be lifted.
We need to know how safe we are returning to work. High risk can still be as fatal as extremely high risk.