How long did it take you to get pregnant after NuvaRing?

Hannah • Twin girls born 6/26/15
I've been off it for almost 4 1/2 weeks now. I took it out on Oct 26th then got my period the 29th and I used glow to track my fertile days but not sure if it was right since I'm just coming off birth control. I haven't had any signs of AF yet but I also got a BFN yesterday at what glow said was 12 DPO. I'm hoping I still have a chance! I'll be testing tomorrow and Thanksgiving and just wait to see if AF shows