"i had surgery (third laparoscopic procedure for endometriosis) the skyla was inserted while i was under anesthesia.  so i did not feel the actual insertion. i had mirena at my obgyn&#039;s office without taking anything prior and it was fairly uncomfortable.  that said i have no history of pregnancy and a very high threshold for pain. skyla has been in for roughly three and a half months. my first two periods were fairly normal. and the third was noticeably lighter.  hopefully they&#039;ll vanish! (mine did w the mirena). now the bad stuff--cystic acne. first month was hellish. super painful cystic acne in my chin and some along my jawline and forehead.  so bad they required cortisone injections by my derm. i&#039;m now on spironalactone: improved."