Okay, here's the story in a nutshell: got wrongly diagnosed with depression in Dec '15, rediagnosed with rapid cycling BP II in July '16, on Lamictal and Abilify as of now.
So I'm graduating college soon, and my sister wants me to come live with her in a different city from my therapist and doctors. She insists I go off meds completely (because of some side effects I told her about that aren't life-threatening but simply annoying, like crazy hairfall) and come live with her. I told her about my hypomania, and she said, "Throwing things around? Big deal." (That's the mildest form of my hypomania that she's seen, although my hypomania is actually very mild compared to most.)
I told her about my depression (she's seen me suicidal), and she simply said, "You won't get that way if you live with someone who cares." When my ex broke up with me because of my BP, she said, "I would have done the same thing. Nobody wants to date a patient." Whenever I'm depressed and lonely and feel the need to talk to someone about it, she says, "I don't have time for your problems. Stop letting your depression control you." Hearing her say these things hurts so much...

She's pretty much the decider in our family, because my parents go along with whatever she says. I'm an adult, but I'm dependent on my family since I'm still in college and I only make bare minium as a freelance editor, so I can't risk making it on my own. How do I deal with her without it affecting my relationship with my sister? She and I used to be best friends once upon a time, and now we fight every other day because of my diagnosis.

Any suggestions? Or just... someone to listen? I don't have anyone else to talk to about this, and my last session was only three days ago, and I can't afford to keep going back whenever my sister and I fight (pretty much every week).

PS: I'm actually a lot better now thanks to my current set of meds - have only had one or two days of highs/lows this month, all manageable enough to go about my daily life easily - and that's why I'm hesitant to lower my dose. Just in case things spiral downward again...