In an interview with Instyle Dakota Johnson talked about her menstrual cycle and the difficult search for the right birth control:
If I’m honest, my hormonal changes during my menstrual cycle are ruining my life. Every month. It’s unbelievable. It’s really fucking amazing. I can’t get a grip on it. I’m like, what? Every time, I’m totally scandalized about what happens to my body and my brain. My boobs are like eight times the size they normally are. It’s really a traumatic thing, and it happens every month. I just can’t get used to it.
It’s really, really insane. It’s also very tricky to figure out what type of birth control you’re meant to be on, and if it’s even healthy. [...] I really would like to understand and be able to manage things a little better, know what’s happening in my body, and know what I’m putting into it.