Earpain for 3 days. Now sudden sharp pain to ear, followed by blood and hearing loss. Pain better. Eardrum rupture? Should I go to doc or wait?

Hearing loss. New onset hearing loss and blood, sounds like potential eardrum rupture. It is definitely worth a doctor vist.
Have a doc look. It sounds like you have a middle ear infection. The pain was caused by the buildup of pressure. Pain gets better as pressure is relieved when eardrum ruptures. Untreated infection could lead to hearing loss. Best to have an ear exam and see if you need antibiotics or other treatment. Good news is that these usually heal well in a few weeks or months.
Otitis. From your description it certainly sounds like you could've ruptured your eardrum. I recommend that you see your doctor for treatment. Good luck!