You BC nurse is correct - take one day at time. Get through tomorrow first. Try to calm the brain a bit and don't let it build up too much.
Your new embroidery machine will get lots of use !!! Now is the time to think of designs etc. Use this time to your advantage.
Are you into music ? Use that to stir you along as you sew or use it to help calm your nerves, whatever works.
Remember the computer (this site) plus your phone are the best supports at the minute. Keep in touch with people. With this virus many people feel the same as you do so SMSs and emails are great.
Use the helplines available if you need to talk. The BCNA helpline is there for times such as this.
Did the BC nurse give you details of any local support groups ? If so, use them as they have all "been there, done that" and will be happy to support you.
We are all thinking of you. <3