NuvaRing opinions?

Hi! I'm 16 years old, and I just started the NuvaRing today. I'm a huge hypochondriac and I'm really afraid of effects the ring might have on me, if any... I'm just curious what everyone's general opinion on the ring is. I don't really want to be on birth control, but I'm extremely sexually active and I worry too much to trust just using condoms. Thanks!