I had my AC chemo on a Thursday, felt ok Friday & Saturday, then rubbish for the next few days when the steroids ran out. My treatment was every 3 weeks, each time I had 1 bad week, 2 reasonably normal weeks.
I did have to learn to slow down, like you I’m usually energetic and not good at sitting around so got frustrated with being tired. I only had nausea on the first night which helped. I also ended up with oral thrush each time so hopefully you were advised to rinse your mouth, I was told with a salt mix, to try and avoid mouth problems.
Hopefully you will pick up soon, you do begin to feel human again.