If i get diagnosed as bipolar do i need to meds for the rest of my life to function normally?

i know i have mental issues (i feel depressed almost all the time though at times i feel like im on top of the world ( accompanying the depressed side is a need for extra sleep, usually 12 hours to feel rested, low energy, and low drive to do anything, and nothing seems enjoyable anymore, accompanying the manic side is a decreased need for sleep, more energy, and things seem enjoyable, as if i dont have mental issues) , i have anxiety problems, and i struggle with self injury) and i think i may be bipolar though i havent been diagnosed with anything yet and dont get evaluated for 2 weeks