Coronavirus and selfish boyfriend

Hi all.

Currently 28 weeks pregnant and ill, with symptoms of coronavirus. I'm on day 2 and have ordered myself a home test kit. My daughter is currently ill too, but she's on day 5 so isn't eligible to be tested now. My partner had been very sympathetic and helpful at first when my daughter first got ill. It took until day 3 for me to notice signs of coronavirus because that's when the symptoms got worse. She is dealing amazingly though, poor thing.

Today is when things got shit. My partner has left the house this morning despite me arguing with him that we need to be self isolating as a household and he couldn't just go out and.please himself just because he isn't ill himself. He's told me F Off and lots of other lovely things 🙃

How do i get it through to him how selfish he's being, whether it turns out we don't have the virus or not?? It's so frustrating!!! He's also refusing to take time off work and threatened me if i message his boss.

EDIT: He's been out for going on 4 hours around his family and his families business. His dad has severe COPD and is in the at risk category but apparently he's telling people me and my daughter only have an infection and are on antibiotics which really isn't the case. I've tried telling his family to inform them but they seem to be ignoring me.