At 32 years old, this is my first experience with birth control a...

At 32 years old, this is my first experience with birth control and I have to say that I'm completely miserable. I'm eleven days into my first pack of pills, have been bleeding (like my regular period, maybe even worse!) since Tuesday, and decided this morning that i'm DONE. I'm taking this pill for contraceptive reasons only - and if I keep taking them, I won't need them anyway because my boyfriend will surely have dumped me. I'm moody, I'm tired, I have headaches, I can't sleep, my cramps are horrible today (and I've never had cramps in my life), and this out of control blood loss is a little concerning. I called my doc's office yesterday to see if I can stop abruptly, and they told me to finish the whole pack and THEN stop - but I cannot take one more day of this nonsense. My biggest concern with stopping midway through my pack is that I'll be really screwing up my cycle, but something is definitely already screwed up, so how much worse can if really get? Does anyone have any experience with just stopping birth control abruptly, and if so, what should I expect? THANKS!