Ladies need advice and your stories

I have had my Mirena IUD since August 23rd of last year. The entire time I've had it in had been easy, until last month. I started having pregnancy symptoms, but got my period last month and all at home pregnancy tests were negative. This month I got my period and am still having pregnancy symptoms. I called my doctor and she said that my symptoms are not normal side effects of the iud. Had anyone with the mirena iud in had these sort of symptoms or is it just me? What do you ladies think I should do?