Lately, there have been rumors swirling that Beyonce is expecting her second child with Jay Z.

Pictures of the "Single Ladies" singer at her daughter Blue Ivy's fourth birthday party earlier this month fueled rumors that she is pregnant. She was seen wearing a baggy sweatshirt, and fans pointed out that her midsection appeared to be fuller.

Now, another photo of the star is sparking more pregnancy rumors as a source told Radar Online that the 34-year-old is "close to five months pregnant."

The website reports that Beyonce had a recent music video shoot in Los Angeles, and photos on the site show the singer covering up her elegant gown with a black hooded jacket. The source said that while she did not announce or say anything about it, it was "pretty apparent from the way that she was acting" that the pregnancy rumors are true.

The insider said that the "Crazy in Love" singer even used a stunt double for some shots. In more photos published by the website, the said stunt double is seen in a harness and is waiting to be lifted into the air by a crane.

The source also said that despite her efforts to hide her midsection with bulky clothing, the singer definitely "had a little pouch" and that she was heard expressing her discomfort while at the video shoot.

"She was complaining about being really tired and nauseous. It was pretty apparent what was going on," said the insider. The source adds that her shoot, which took place over the weekend, was the latest in an already full schedule of filming for Beyonce's upcoming album. The website speculates that the singer might be done with her video work before her baby bump gets too big.

It has been rumored that Beyonce might reveal her pregnancy at the Super Bowl Halftime show next month, where she is slated to perform with Coldplay. The singer announced her first pregnancy at the 2011 Video Music Awards.