whats the max you went ( can go) without taking a shower?

I had a knee surgery and it hurt so bad i can barely get up and my best friend isnt here often ( she comes by sometimes to help me) so its been 3days i havent took a shower but i dont feel "gross" but she says its too much and that im disgusting. Whats the max yall can go without a shower? ( sorry anon bcause im embarrassed)