Mirena Pregnancy Symptoms, Pregnancy Test, Emergency Surgery, Last Period, Having a Baby

I have been on here before and posted symptoms I was having after I had Mirena inserted. I had Mirena in for 10 months and without me even knowing it, my MIRENA FELL OUT and I GOT PREGNANT. My doctor had cut the strings because my husband could feel them and I was never told to check my strings by anyone at the office. Even if I had been told to, I wouldn't have been able to find it because it was cut so short. I was having pregnancy symptoms and my husband made me get a pregnancy test. We already have 3 daughters, so this was a big shock when it said positive. I was scared to death and called my doctor immediately. They got me in for an ultrasound first thing the next morning and it showed NO MIRENA, but I was 4 WEEKS PREGNANT. I was just relieved that my pregnancy wasn't in my tubes (which would've resulted in emergency surgery or a ruptured tube) and that the Mirena would have to be removed if it was still in place (which has a high rate of miscarriage of the baby after Mirena was removed) This is very scary and I want all of you to make sure you CHECK YOUR MIRENA STRINGS WEEKLY, ESPECIALLY AFTER YOUR PERIOD. The only thing I can figure out is I pulled it out attached to my tampon during my last period. I felt nothing....I never saw it, it just disappeared. Now we are having a baby we didn't plan for and can't afford. We will cope, we just wish someone had warned us instead of saying it is 99.9% accurate, because that's wrong and now I'm pregnant and can't do anything about it.