Hi there,
Well, I'm not taking Ortho-Cyclen, but I've been taking Alesse for about 2 and a half years now, and taking it made my periods marvelous. Generally, I'm just as regular as clockwork--I can almost count down to within minutes of when it'll come. However (and I don't want to scare you--but I'm being honest here), I gained about 10 or 15lbs after being on it for a little while. Now, I was also on other medications at the time, and they could've been the cause of the weight gain, but now I find that no matter what I do, I can't lose the weight and I'm only on one other type of medication (Advair inhalor for asthma), and I don't think this would be contributing to inability to lose weight, so I suspect it may be the pill. I'm going to wait another month (on BC), and see if I lose any weight because I'm trying desperately to do so, and if I don't, I'm off the pill. So there's my experience. Besides the weight thing, I've had no other side effects.
Good luck!