Women have been sharing impassioned stories of how they terminated their pregnancies following Alabama's vote for an almost blanket ban on abortion.
The hashtag #youknowme has begun circulating on social media following a plea from actress and talk show host Busy Philipps.
Philipps asked social media users to share their abortion stories in a move echoing the 2017 #metoo hashtag, which gained momentum when actress Alyssa Milano asked victims of sexual assault to speak out.
"1 in 4 women have had an abortion. Many people think they don't know someone who has, but #youknowme," Philipps tweeted to her 367,000 followers.
"So let's do this: if you are also the 1 in 4, let's share it and start to end the shame. Use #youknowme and share your truth," she urged in a Twitter post which has been liked more than 14,000 times since being posted early on Wednesday.
Philipps' tweet was in response to Alabama becoming the latest US state to move to restrict abortions.
Under the bill, doctors could face 10 years in prison for attempting to terminate a pregnancy and 99 years for carrying out the procedure.
High profile celebrities who have come out in opposition to the bill include comedian Sarah Silverman, actress Alyssa Milano and Captain America star Chris Evans.
Pop star Lady Gaga called the bill "a travesty".