The abdominal pain you are experiencing may not necessarily be directly related to the use of Nuvaring™. It is relatively rare for women to experience stomach pain as a side effect of using this contraceptive method. It is important to keep in mind that ovulation tests detect a specific hormone related to ovulation, which can also be present in the body for other reasons. Therefore, just because the hormone is detected in your urine does not necessarily mean that you are ovulating. As long as you are taking your hormonal contraception as prescribed, it is unlikely that you are ovulating.