Answer:
If your shower doesn't work, and you can't bathe, it's illegal. Tell the land lady that you are going to speak to someone about tenant rights and you are going to call someone in your city government about it and ask. If your doctor doesn't feel your surgery should be urgent, 6 weeks is about right. Good luck with that. As long as you are paying the rent., you have the right to a habitable place to live. That includes being able to take a shower!
Sounds like someone is trying to evict you. Without giving you a proper eviction notice.