birth control
"I started this pill a couple months before turning 18, just turned 20, so about 2 years or so. I did notice the weight gain but I quit smoking at the same time so I don't really know what caused it. My periods don't exist anymore.  My doctor told me I can skip my placebos and never bleed. I still spot at random times of the year. Usually twice a year and it's very light to where I don't have to wear anything. I have noticed my mood swings getting pretty bad at certain times but overall the pill works great for me!  I haven't had any issues yet."