AUSTIN, Texas (KEYE) — This year marks 49 years since the U.S. Supreme Court affirmed a woman's right to an abortion with the landmark Roe v. Wade decision. That landmark case now has a rocky future. Twelve states already have laws in place to ban abortion if the U.S. Supreme Court overturns Roe.

The U.S. Supreme Court declined to intervene and challenge Texas' abortion law earlier this week. The case now sits before the Texas Supreme Court where it's expected to be for months. Courts allowed the six-week ban to continue in Texas as it faces challenges from pro-choice groups.

On Saturday afternoon, the annual 'Texas Rally for Life' march was held at the State Capitol in support of banning abortions. Nearly five decades later, the national debate is growing louder as this year’s Roe anniversary could be the last. Anti-abortion supporters are standing firm in their beliefs that every child with a heartbeat has a right to life.

Pro-life Texans marched from 13th and Brazos in Austin to the south steps of the Texas Capitol.

“It’s not fair that people can choose to kill another human being,” Pro-life supporter Abby Johnson said.

This year's event commemorates the 49th anniversary of Roe v. Wade that ruled women have the right to choose to get an abortion.

“Roe v. Wade really takes away womanhood in the sense that so many of the aborted are female and would have grown up to be women,” Pro-life supporter Colette Daulton said.

The fact that Roe might not see its 50th anniversary brings Johnson and Daulton a sense of joy. Claire Caldwell's story of being an abortion survivor resonates with them. Caldwell's mother got an abortion at a young age, and it's now created a spark in her to end abortions.

“She shared with me about being pregnant at 13 years old being told that abortion was her only option," Caldwell said. "Instead, she was forced to have a D&E dismemberment abortion that successfully aborted my twin, but miraculously spared my life.”

Pro-choice organization Progress Texas released a statement Saturday saying that Roe makes abortion services vastly safer and more accessible to pregnant people throughout the country.

"But state legislatures and conservative courts have chipped away at the rights Roe means to protect, and a perfect example is Texas’ six-week abortion ban. If Roe falls and the Supreme Court goes back on its word, then nearly half the states in the nation are poised to ban abortion," Progress Texas Advocacy Director Diana Gómez said.

Gómez said no matter what the Court decides, abortion is essential health care and Texans will continue fighting to expand access.

"Access to abortion is not just about legality, it’s about our dignity, our humanity, and our freedom,” Gómez said.

“I promised to protect the life of every child with a heartbeat, and we did,” Governor Greg Abbott said.

Governor Abbott touted his push to pass sweeping laws to protect life on Saturday at the rally.

“We passed a law that bans mail-ordered abortion drugs in Texas and prevents physicians from providing abortion drugs to women who are more than seven weeks pregnant,” Abbott said.

The Texas law that bans abortion once cardiac activity is detected usually around six weeks before some women know they are pregnant has been in effect since Sept.

Governor Abbott said Texas is stepping up and providing more than $100 million for Alternatives to Abortion programs to support expecting mothers in need. He vowed again Saturday to ban abortions once Roe v. Wade is overturned.

“As long as I am your governor, Texas will always fight for the unborn and save them from the ravages of abortion,” Abbott said.