birth control
"I like this pill because it is a progesterone only pill. I don't like the idea of adding estrogen. However my biggest complaint is that I have irregular periods. Sometimes I have two periods a month. I like everything about it otherwise, no other side effects. I am unsure of what to do because I am tired of having two periods a month. I did have times in the past where I had a period every other month. So I am not sure why it keeps changing."