I have been on the Nexplanon birth control for about a year and 3 months. I did not have a period the whole first year and now I am having one every other month. I am also having sharp pains in my left ovary area (usually after intercourse with my husband). I am also having pregnancy symptoms but the test keeps coming up negative. Has anyone had this problem? And if so what is your advise? Dorris Wedding items to wear in the fall of the wedding