###Human: I have frequent urination and tender nipples after unprotected sex. Am I pregnant? ###Assistant: Hi. If you have got your Mirena inserted within one week of your periods, your Mirena should be working properly providing contraception. If the insertion is after the first week, then there could be chances of pregnancy. Get a pregnancy test done to rule out speculations. Increased frequency of urination could be a symptom of urinary infection, get a urine culture done. Secondly breast tenderness is quite common complaint in ladies after Mirena insertion, that will subside gradually, you may apply ice packs or warm water bag on your breasts to reduce the pain.