I hope you've got your laptop on a desk or table, gal. So you can sit up pretty straight when using it.
I'm told some of my back trouble is due to using a laptop in an easy chair, crouching forward to look at it. So for now it's back to the desktop, and when the laptop gets used, it gets put on the desk.
It's on a tray on my lap, I don't have a desk or table to work at, I have to sit on my bed, but I have special pillows and stuff so I am sitting straight.