I haven't showered in days
What has made you decide not to shower?
I am self conscious and don't want others to judge me.
If you are concerned about what people might think of you, you should make sure you take care of your hygiene. It is unkind to others around you to be dirty and smelly, and people are more likely to judge you if you are.
I don't care what I smell like. It's my right to smell bad.
If you are unable to take care of your self you might need help. Bad hygiene is a sign of mental illness. You should not feel ashamed if you have a problem but get the help you need.