Sick again

I went years without using a sick day for being sick and this school year I've been sick three times. On Tuesday, we spent the day working moving stuff around, kicking up dust and I came into work on Wednesday feeling sinus stuffiness and muscles aching but from what I thought was moving repercussions. By Thursday I knew it was actually a cold. I took a Covid test Thursday morning before coming into work and it was negative. Luckily on Friday, I had parent-teacher conferences at home via zoom. I started feeling better and thought I'd be able to enjoy the weekend. Saturday, after getting dressed to go out on errands, I felt so horrible, I ended up back in bed by late afternoon. I took another Covid test this morning-- negative, but I'm now wondering if I should take tomorrow off. There is so much to do this week, being sick complicates it a bit, but it certainly makes me step back and take things easier.