Coming off birth control and for natural method

1. Does anyone have experience coming off the nuva ring ? What should I expect coming off the artificial hormones ( period delay, acne, weight gain .... ect) ? What has your experience been?

2. I want to track my cycle naturally to help avoid pregnancy. Any tips and tricks to doing this? Any good info sources ?

I will be using condoms on "unsafe" days and probably the " pull-out" on safe days. I know this isnt going to be as preventative as other contraceptive methods but my fiance are wanting to be on the baby train soon anyways. I just want to know what my natural cycle is like, I've been on birth control for 13 years !