I had a Mirena coil fitted on Wednesday and I have been having some pretty horrible side effects ever since. On Thursday I started suffering with waves of really crippling stomach cramps. They were so painful I started crying, so my boss took me down the docs to get me checked over. The gynaecologist told me that my womb had gone into contractions because it was trying to expel the coil and that I was experiencing a sort of mini labour! (Wasn't expecting that!). He loaded me up with pain killers and told me to see if it settled down after a few days. I'm still having pretty painful cramps but not as painful as the ones on Thursday.