hi, i'm 25 and have the skyla iud. I have had the iud for about 9 months now. my last 3 periods were abnormally long (12 days) and now my period is about 2-3 weeks late. i haven't had sex in 2 months (and I had my period just last month) so I know I'm not pregnant. I have had some cramping and the sensation of my period, but no actual period. Anyone know what's up? Thanks.