One in three women will have one - but we rarely discuss abortion in public.
Girls star and mother-of-two Jemima Kirke wants to help change that, and has recorded a video for America's Centre for Reproductive Rights (CRR) where she talks about having a termination.
In 2007 I became pregnant by my boyfriend at the time. I wasn't sure that I wanted to be attached to this person for the rest of my life. My life was just not conducive to raising a healthy, happy child. I just didn't feel it was fair. So I decided to get an abortion.
Kirke paid for the termination herself as she felt unable to tell her family about the pregnancy. Because she was a 21-year-old student at the time, Kirke had to forgo anaesthesia to afford the procedure - something she describes as one of the many “obstacles” women face to use reproductive services.
I still see that today, I still see shame and embarrassment around terminating pregnancies and getting pregnant so I have always been open about my stories, always shared them, especially with other women.