Oh my god!!! I just read through all the posts looking for someone else with this issue! After using the NR for a few months, i developed this horrible back pain that kept me awake at night tossing and turning trying to get comfortable. I also had a tightness in my chest and although i did not develop a rash, i felt itchiness all over my body. I started having flu like symptoms and wondered if I developed adult onset allergies since I never had them before. I even went back to my GYN and told him and he made me feel like I was crazy...I had stopped the NR for a month and then restarted and the back pain returned...So, i stopped again...strangely enough though, the pain remained for another month...I did also develop a severe migraine headache a few days before I had to remove the ring each month. I tried switching to an oral contraceptive but the naseau always stops me from taking it. Reluctantly, I went back to the NR this month. So far, I have naseau daily which comes in waves, bloating, increased discharge, fatigue...I feel pregnant...just figure my body just needs to get used to it again. Not ready for another baby so don't feel i have much choice right now. Any suggestions?