I've been delinquent and now I'm freaked out.

I had a baby in June and I had a Mirena inserted in August. I have never gone looking for the strings (bad, I know). The past few days I've had weird twinges in that area that remind me of a poorly inserted tampon but higher up. This is what prompted me to go looking for the strings.

I will call the midwives in the morning but in the meantime, tell me internet, how freaked should I be? Right now, I feel like I'm one orgasm away from a perforated uterus.