Geraldine McGroarty, who is originally from Greenock but now working in London, shared her story online.
The PM's spokesman said he has received oxygen treatment but has not yet had to be put on a ventilator.
Nicola Sturgeon stressed the spike is partly due to fewer deaths reported at the weekend.
Hospitals across Scotland are converting wards into extra intensive care units to treat patients diagnosed with Covid-19.
The monarch sent the message on behalf of the royal family to mark World Health Day.
Latest coronavirus news as the Prime Minister is in intensive care.
Foreign secretary Dominic Raab will now 'deputise' for the Prime Minister 'where necessary'.
A Dumbarton care home is facing accusations of locking protective masks away from carers.
Catherine Sweeney passed away on Saturday night at the Royal Alexandra Hospital in Paisley.
The Scottish secretary thanked the armed forces after they airlifted patients from Orkney and Shetland.
Ministers have revealed new guidelines for the construction industry during the Covid-19 lockdown.
The Harry Potter author said she had not been tested but used a breathing technique in a bid to relieve symptoms.
The chief medical officer for Scotland has resigned after breaking lockdown advice by visiting her second home.
Scotland's Covid-19 death toll stands at 220, while there are 3706 confirmed cases.
Dr Catherine Calderwood was visited by police after being photographed visiting her second home in Fife.
In these challenging times our cats and dogs are thrilled that we're home.
First Minister Nicola Sturgeon said 8000 people had already signed up for the initiative.
Scotland's Covid-19 death toll stands at 172, while there are 399 new confirmed cases.
The FM was emotional as she shared how much she was looking forward to seeing loved ones again after the coronavirus crisis.
Investigators have found paedophiles discussing opportunities to exploit the coronavirus lockdown.