thanks for this service. i am 27 and have 2 children from 6 pregancies, and have had a mirena for 2 years and 2 months. i had a long aeroplane flight last sunday, bled a little for 2 days, and have started bleeding again after another flight. my hubby noticed my lower back near my tailbone is swollen. can a mirena move during a plane flight?! should i get it checked out? once again, thanks.