I just got my mirena 2 weeks ago, 6 weeks after the birth of my 2...

I just got my mirena 2 weeks ago, 6 weeks after the birth of my 2nd child. A few hours after the insertion i had an intense ringing in my ears which lasted for an hour, it was like I had a radio on in my ear. It was so bad I called the on-call doctor to ask if I should come back and have it removed (I was told to wait until the next day to see if it went away--which it did). I was also very dizzy the first day. I have bled every day since the insertion, like a period but alternates between bright red and brown, and I have cramping. Past 2 days I have pain in my lower left side. Today I tried to find the strings but could not....I think my fingers are too short, to be honest. The pain in my side was quite bad today, i postponed my 2 week checkup because i haven't stopped bleeding--perhaps that was a mistake. The only good thing so far are the intense dreams, very vivid and interesting--almost out-of-body-type lucid. I guess I will find out next week if I'm perforated or if this is normal.