IUD question

Hi I have a Jaydess IUD (might be called Skyla in the states) which is the smaller IUD. I had it inserted beginning of August after having a Mirena removed. I had to get the Mirena out because it had partially expelled (plastic end was outside the cervix) after a year and a half. So far I haven't had problems with this one, but my last period I noticed more days of cramping, and heavier bleeding which happened before I figured out the mirena was partially out last time. I checked my strings and they seem really really longer, much longer than I remember. To give an idea, it only takes about a third of my index finger to find them. I'm terrified that this one is expelling. Just wondering if anyone has had this happen. I've been through almost all types of birth control and don't want to start over again.