depends.. if it is every day..it gets you in a different mindset
for me, being in PJS all day would make me lie on the sofa with havoc reigning all around
you are heavily pregnant though, so i will make allowances
what about wearing comfy clothes.. tracksuit or leggings rather than jeans and a soft t shirt or fleece...?
at the weekend, i tend to stay in PJS until late morning, as i do housework and hoovering, then i have a bath and get dressed.