They seemed to put rumors their marriage was in trouble to rest just last week with both an appearance at the InStyle Awards and with his 49th birthday celebrations, but now, new rumors are plaguing Nicole Kidman and Keith Urban's relationship.

According to Woman's Day (via the Daily Mail), Kidman is having a "really difficult time" because she's constantly afraid that her marriage to the country singer is going to implode any day, and there will be nothing she can do that will stop it.

"She absolutely doesn't want her marriage to end-and Lord knows she's fought hard to make it work-but she and Keith have had so many problems now she fears she's walking a tightrope with him, and they could topple off it any moment," the source said.  

The report comes after a week where the two, who have been married for ten years, stepped out at the InStyle Awards, where Kidman was honored with a Style Icon Award, and appeared to be as happy as ever while doing so.

They also celebrated Urban's 49th birthday, which saw him sharing a photo of him and wife, as well as a cake she had made for him which wished a happy birthday to "Big Cat Daddy."

Those moments also came after another report from Woman's Day, which claimed that friends of the couple were especially worried about their marriage and feared a divorce announcement was coming soon after the two had allegedly not been seen together in two months.

"You have to wonder if there are fresh problems in their marriage, especially as they always make a big noise about how they hate spending time apart," sources said at the time. "There have been plenty of opportunities for them to be together lately and they certainly haven't been rushing into each other's arms."

Tags: keith urban Nicole Kidman