Rumors had been swirling that the pair – who have only been dating for five months – were about to have a baby after they were spotted checking out baby clothes in a London kids boutique called Cubs.

REPORT: Katy Perry & Russell Brand Engaged!

But Perry killed the rumors by confessing on her Twitter page that it was her time of the month by saying: “@thedoctoluke ur gonna make me cry, maybe that’s my period tho. THAT’S RIGHT I’M BLEEDING. Face. Better luck next month peepz.”

Speculation the 25-year-old is carrying 34-year-old Brand’s baby also spiked after she posted a series of hints on her Twitter page recently.

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One tweet read: “Just so you guys in LA that you guys are about to experience 2010 … It’s noon on January 1st here in the future – let me tell you 2010 is BUMPIN!”

And Perry also posted a series of cryptic Twitter messages hinting she was pregnant – the day after her New Year’s Eve engagement in India, the singer wrote: “Let me tell you 2010 is BUMPIN!”

Kardashian’s Twitter page is littered with tweets likes this, ”Check out my commercial for @carlsjr…What do you think?” and “OMG!!! Bumpits! I need it! LOL.” Which tweets are paid? At this time, Kardashian’s Twitter page does not have any tweets labeled as sponsored. According to Derek Rey the co-founder of Ad.ly; Kardashian’s sponsored tweets are limited to once per day.