"it&#039;s effective when used correctly. during the first two months i experienced headaches and slight hair loss around my hairline. i used to go around 40 days between periods and they lasted 8 or 9 days. i now have &quot;normal&quot; or predictable periods. my breasts are always tender during the third week, but i&#039;ve grown at least a cup size, so i&#039;m ok with that. most importantly, i&#039;m not pregnant."