Probably a silly question but is it ok to lay propped up a lot?

Holly • 🌼 mum to Penelope 🧡 baby boy due March 23

Since being furloughed due to the UK lockdown, I’ve been sitting about a lot more than usual and I often find it comfiest when I’m laying in bed propped up with pillows (so I’m on my back but upright, not flat, if that makes sense). I try to go out for a brisk walk everyday, but is it ok to be lying like this a lot? Thank you