Long story short I somehow lost my prescription renewal for BC, and my clinic (I go to a teen clinic and don't want my parents to know) is down in the cities, when I go to school 3 hours away. Planned parenthood and my schools health services can't get me in until late in the week and I needed to start my new pack yesterday.

my roommate offered me a pack of hers, but she's on Desogen and I'm on Apri.
I dont know how much brands matter, can I take her pack for now and get back to Apri after I go back home or is that not healthy?

I think that would be ok, as it's just like switching your brand, even though you'll be going back to the other brand afterwards. You might get different side effects from the new pill, but you might like it better than yours. I take Desogen. I got alot of headaches on my first pack, so came off it altogether for 2 months, then decided to give it another go. I've taken 2 more packs and now it's fine. It's the best one i've been on (knock on wood).