birth control
"I had the Mirena inserted about 6 weeks ago.  It was quite painful, I cursed very loudly and then broke out in a sweat, but after about 10 mins I was ready to leave.  I had cramping for about 3 days afterwards but nothing major.  My first period afterwards lasted for like 10 days and I had the worse migraine EVER.  The only other thing I have noticed is I have a small belly now, oh and I was so HORMONAL for the first couple of weeks.  

Since then, everything has been good, I think you need to let you body get used to it and then all the symptoms fade.  If the belly persists, that may be annoying, but I think it's already better."