33 weeks pregnant and moving

Jordan
I am 33 weeks today and will be moving this Friday/Saturday. Obviously my SO won't let me touch the big stuff, but I was wondering if it's okay for me to carry the Pack N Play & the swing up the stairs? They are still in the original boxes, & the heaviest things i would even attempt to move. Also, will making several trips up and down the stairs be okay? I have a million small things (5-15lbs) I can carry. We have lived with my MIL in her one story house and we are moving to an upstairs apartment. To be completely honest, I've been pretty lazy my whole pregnancy as far as never working out. I am not someone who views pregnancy as a disability and I want to be able to help as much as possible. The ONLY reason I am even slightly concerned enough to ask is because I haven't been doing much, and plan to be doing a lot of "work" this weekend (a million small trips up and down the stairs with boxes, a couple of "heavy" things, setting up the nursery, etc.)