living increases your risk of cancer, my advice? just fucking live and stop worrying about all that shit. If you had one day left to live wouldn't you want to make the most of it? Life sucks and we all get fucked one way or another, my health is utter shit and I've got all kinds of crap wrong with me but instead of worrying I focus on projects.
"Increased risk of cancer" doesn't mean you're going to get cancer. Every effective medical treatment has risks that must be balanced against the benefits.
What are the risks associated with brittle bones? What is the actual additional cancer risk of hormone replacement therapy? What kind of cancer is risk elevated for, and how treatable is it? (Not all cancers are the same.) These and others are definitely questions you should talk over with your regular doctor so that you can make an informed decision.
I'd ask the doctor if anything, but chances are if there were a realistic chance of causing anything like cancer then it wouldn't have been prescribed to you. Since the warnings are for people with risk factors you don't seem to have I don't think it's worth freaking out over.
My old birth control increased my risk of blood clots... but really only if I were a smoker over age 35.
Every single medication going has risks, it's just a case of how likely they are to occur. My contraceptive pill has a list of potential side effects as long as my arm, I've had none of them. If they start making you ill, then see a doctor, otherwise I wouldn't worry about it