Its the third month of mononessa and i've been breakthrough bleeding for a week and a half, is this normal?

Breakthrough bleed: Breakthrough bleeding (bleeding at the wrong time) is very normal on birth control. It happens in about 1/3 of users. Its no big deal and usually self corrects over time. If you are not satisfied or it continues to happen then consider using a different birth control method. It is a common side effect and does not mean something is wrong or that the Nuvaring is not working.

Bleeding: Take your pills at the same time every day. Did you miss any pills? Continue taking them even though you have had break through bleeding. It can take up to 6 months to finally end up with the pattern of bleeding you will have on these pills . If the bleeding still persists your provider may change your pills and do any testing necessary to evaluate the bleeding. Patience is a virtue.