What Are The Risks Involved In Placing Mirena A Second Time?

Hi, i have had the mirena for almost 5 years and am not sure what to expect i have heard horror stories. Also was considering getting it put back in however are the risks increased by doing so. I have not had any children yet but my boyfriend and I do plan on having a family after the wedding 3 or so years from now? Whats my best option? I cant take the pill they make me sick and started affecting my hormone levels negatively.