I have used the Nuva Ring of and on for years now, consistently for a year, and have unprotected sex with my boyfriend often. Recently (for about 2 or 3 weeks) I have been having some symptoms of pregnancy such as nausea, headaches, breast tenderness and possibly swollen breasts. I don't know if I am being paranoid or what, but I really don't want to be pregnant. Money is tight and I want to find a cheaply priced but very dependable pregnancy test. Will an over the counter test give me a sure answer? When can I take it and get a correct reading? Will the use of the Nuva Ring effect the reading? I just took my ring out as its been 3 weeks since I put it in. My flow hasn't started yet but it may soon. Please help!