Puppies sleep a lot but sounds like you notice she us sleeping more. Agree with Karla that you get her checjed ASAP!
Just like human babies, puppies should not be put on high surfaces like chairs,Meds, etc.
Hope she is ok and do please update.
Probably a Concussion which is serious!!! Please, get her to her Vet ASAP....They will give medication to ease the swelling of the tissue....Don't wait any longer, she's depending on you for help....Make the call, now...She needs treatment & soon....Let us know what happens & good luck!