I was on Micronor (norethindrone) for 10 months but stopped due to bad side effects. Having my 1st period and it has been 10 days, very heavy w/ pain. Is this normal?

Painful periods. There are many treatments for heavy periods. Most of the birth control methods are great at helping. If you did not like Micronor then there are many other options. The Mirena (levonorgestrel) IUD is often a great choice for those with painful periods who do not want to become pregnant.