"i&#039;ve been on this pill for almost 2 months and it&#039;s given me horrible headaches. i never get headaches. i&#039;ve tried taking advil and tylonal but nothing seems to help. i&#039;ve had large blood clots and spotting. this will most likely be my last month as it&#039;s not worth the side effects. my doctor prescribed it for endometriosis and heavy periods. i&#039;d rather have my 12 day heavy periods than constant headaches, huge blood clots and spotting."