I developed a large gallstone after being on the pill for years. I have since gone off the pill and it has taken months of acupuncture to get my period regular again. If you're taking the pill for hormone regulation, I definitely recommend acupuncture. I also didn't want to have my gallbladder removed. There are other options out there, they just take a long time. After taking chinese herbs for three months, I had no more symptoms and now it's been nine months symptom free.
Hormones affect every system in the body, and unbalancing the hormones by the use of artificial hormones can therefore wreck havoc on the body in a number of ways.