I take them, but not to control birth. It's because I kinda lost way too much blood because my periods were super irregular and one got WAYYYYYY too heavy..... I think it's helping because once in a while, I forget a pill, but it usually takes 2 days of forgetting/placebo to start me.
What kinda makes it worse, is usually when I feel sick, I just ignore it and it goes away, so when I got anemic from blood loss, I kinda just let myself continue to bleed heavily until I kinda half fainted and collapsed and could barely walk from dizziness. And then I had to get an IV and stay overnight in a hospital. (and I freaking hate hospitals. >.>) Then after the thing, I've gotten like tons of blood tests, but all comes out normal, so we're hoping the pills will regulate me.