Sleep crying.

I was diagnosed with endometriosis last year of March and my OBGYN recommended me to get an IUD to help "shrink" the cyst and soothe the pain. I got the IUD in August 27 of last year and it's been 7 months now. Now I'm crying in my sleep every night. I have vivid dreams and just wake up in tears. I told my obgyn, but she said wait until I have surgery to get the IUD out. Have anybody else experience this?