Just four days after embarking on what was to be a weeklong honeymoon, newlyweds Heidi and Spencer Pratt have decided to flee Mexico amid fears of a looming epidemic of swine flu.

"After the best day of both our lives, Heidi and I left LA Sunday for Cabo to shoot the music video for Heidi's new single, "Blackout." We planned to stay through Sunday. Unfortunately, due to the pig flu epidemic, the Pratts are headed home this evening. Heidi's new EP is available on iTunes today -- check it out! " Spencer reveals to Life & Style.

For more on the reality couple's wedding, check out the current issue of Life & Style, on stands now!

Photo Credit: Retna