I had Mirena removed on the 9th of February. My husband and I thought it would take a few months to get pregnant. I should have started my period on the 21st. We did have unprotected sex the night before the Mirena was taken out and a few days after. I have several symptoms of pregnancy, but the two tests I took were negative. I have read a few blogs that after Mirena it took longer for a test to show positive. Is this true? What should I do?