Mirena
"Please don't be afraid to try this! I'm 36 with no children, had to come off pill for health reasons.  Dr said it was great for women my age.  I was scared to death from all these reviews.  But I gave it a try.  Yes, insertion was terribly painful (and I'm a tough cookie), after a few hours of cramping, my ibuprofen did the job and I felt better. Had a sore back the next day and thats been it. No bleeding (insertion during my cycle) since.  I've been working out and actually have started to lose weight.  No acne or moodiness, although its only been a week.  Please give it a try and enjoy your built in birth control."