I advised my direct manager on Friday that my sister had just tested positive for covid and I'd spent all of Wednesday with her, so was concerned and asked what the policy was. They told me since there is no government mandated isolation anymore I should come to work and just wear a mask. I tested positive on Sunday, told my manager and am now at work on Monday in a mask and sick as a dog. Funnily enough, my manager isn't here putting herself at risk. Just told my managers boss that I'd be out tomorrow due to it and they said 'covid doesn't exist, you're letting people down because I'm not allowing anyone to cover for you'. I'm a month into a new permanent contract which comes with a probation period (even tho I've been with the company 3 years) and now I'm worried they'll use this against me to fire me.