birth control
"Like many others, this pill causes me extreme breast tenderness.  My nipples get so sore that even the touch of a cotton T-shirt is excruciating at times.  Even more annoying is that you absolutely have to take this pill at the exact same time every day.  I get up for work at 5 or 6 every day and take the pill right when I get out of bed.  But on the weekends, if I sleep until 7 and take the pill when I wake up, I start my period all over again!  I understand that EVERY birth control pill is most effective when it is taken at the same time every day, but a 2 hour difference is minimal and doesn't affect other pills.  Other than that, I had not other side effects, but these are pretty annoying...especially the timing issue."