Dreaming of bathing is a positive dream as per dream meaning and interpretation. It means a second chance or opportunity to correct mistakes. It means just wash away your sins and come clean.
Dream of bathing and you are happy means there will be good things in life. Someone who you had lost or had gone away will return back. You will be forgiven. There will be positive changes in life.
Dream of bathing and you wake up sad or terrified means you will miss an opportunity to come clean. It is like missing a train or bus just because you were late deliberately.
Dream of bathing and you see blood is a kind of bad omen. It might that you might witness a crime or accident. It also means threat to your life.