One measly month

This is a continuation of "Discoid Meniscus"
I applied for a month off, so I could give my leg complete rest and give it a 100% chance of recovery so I could avoid surgery.
The person who is 2 levels above me got the news on Monday noon. I was to have a discussion with her on Tuesday for which I waited the whole day and it never happened. Wednesday, I was asked to call her. I did at 1pm, when she was busy. At 3pm, when she was busy again and asked me to call at 5.30pm. At 5.30pm where she didn't even consider it necessary to pick up and waste her breath to tell me to call back again, so the call was cut.
Thursday afternoon, my manager says "She's available, call now". I call and she says
"I have wanted to talk to you about the leave, you haven't given enough notice."
"I got to know on Friday evening and informed my manager on Monday. And this is a health thing, not something I could plan in advance."
"It's not like you are having heart surgery today afternoon, then we can consider"
(If I have a heart surgery today afternoon, she will consider, I suppose I should thank the Gods for it)
and some other nonsense later, she continues
"Anyway, the client will want 2 weeks notice"
"But this is medical. Also, the onsite co-ordinator has already said that the client will be ok with it since it is health related".
"Why is there this miscommunication, the client has to always be informed 2 weeks in advance"
(Probably even if I am clutching my heart and dying right now, I will have to wait 2 weeks to get a doc)
"We have been very considerate towards you, we already let you have almost 3 weeks off in December. You have to show some responsibility towards your project"
"I remember our conversation in December, you accused me of lying and faking a problem"
She laughs (she has the bloody audacity to do that)
"That is what I thought then, but this is different"
(How so, I beg you, enlighten me)
"I will finish any KT in a few days, the client won't have a problem. Please think about it from my point of view, I don't want to risk it any more"
"You are being so stubborn, thinking only about yourself"
(Like she's going to do anything for me if I HAVE to get a surgery done. And at least she's supposed to consider what I need)
"But it is my health. How can I take another chance. Do think from my point of view"
"I am thinking from your side. I have offered you two weeks"
(And this is where any semblance of polite talk disappeared)
"But that is what you started off with, you haven't offered me anything!!"
"If this is how you want to do it, my answer is no, you won't get leave, I need to think about it. Two weeks definitely. I consider this discussion completed."
"This is necessary for me." (a pathetic, grovelling, embarassing, last ditch effort from me)
"My final answer is NO".

One measly month off at a project I have worked 1.5 years on, in a company I have worked 4.8 years in.
What do you think I should do now?