NuvaRing problems, advice please?

Maddy
so i've been on the ring since august and from the start it made my periods heavier and my cramps much worse, but now i've started feeling really sick and nauseous on my period. 
it starts a week before my period and then ends a couple days after it; it's so bad that i can hardly eat anything without feeling pain. i already have stomach issues so it's just made it 500 times worse. additionally, my breasts are sore ALL the time.
i'm not due to take out the ring for another week, but i took it out this morning because i couldn't stand it. i have a doctor's appointment next week as well, but until then, any advice? i was really enjoying being on the ring but it's evidently not good for me...i'm not sure what other options would be. i'm 17 years old.