Are nuvarings good for longer than 4 months if kept in fridge? Ordered 90 day supply, forgot had 3 in fridge. Exp dates on boxes are 3/16 & 7/17.

Conditional, yes. If the Nuvaring are kept in the refrigerator then they tend to remain active in preventing pregnancy for up to one year. However, I would use supplemental barrier contraceptive such as a condom to be certain that there is no failure with the "expired" Nuvaring.