NuvaRing
"In was prescribed Nuvaring because I wasn't sure if I was ready for an IUD yet so my doctor thought Nuvaring would be a good alternative. 

The only positive experience I had was putting it in. Easy. Didn't have to think about it anymore. Until about 24 hours later.

All of a sudden a ton of symptoms hit me at once. Complete loss of appetite. Nausea. Vomiting. Pain in my legs. Pain in my abdomen. Headaches. Dizziness. Vision changes. 

Turns out, I'm allergic to Nuvaring. I immediately took it out; over a month later and I'm still having some symptoms.

Definitely make sure you read the possible side effects before using the ring, even if you've taken birth control before!"