Yes, as @iserbrown says, Do you have a wound in your armpit - maybe delay using it til the wound heals? I was lucky - My few nodes were pulled out from under the skin (no incision) so I was able to use deodorant almost immediately. But the whole area from my nipple to underarm was rather sore & sorry & bruised and very numb!
Isn't it annoying - that period of not being able to 'do things'? ..... Just put your feet up, I hope your daughter is spoiling you - it is amazing how incapacitated you are, when 'one wing' isn't able to be used!!
As the Monk used to say in the TV series, Kung Fu ..... "Patience, Grass Hopper'' ;)
I hope you are able to sleep well .... do you have a small pillow to help support the affected arm? xx