As soon as I knew my DGD was positive, we tested daily. Despite initially testing negative, DH displayed symptoms, so we slept in separate rooms, used different bathrooms and living areas. He eventually tested positive. He uses a mask, if he needs to change rooms and I move well away.
He caught it from my DGD over a week ago. I was in contact with her at the same time and remain negative.
Hopefully our precautions have worked, as I am CEV, but I am not being complacent. I test daily to make sure I am OK.
Obviously some people won't have enough rooms to isolate in, we are very fortunate in that respect and that the Scottish Govt. were still offering free lateral flow tests. I managed to order another box this morning. DH was contacted minutes after recording his positive test, checking on his health.
Frankly, I think your husband is disrespecting you, by not respecting your health and doing what he can, to avoid giving it to you. I suspect it may be too late now.
Hopefully you will be OK.