Not sure if Rihanna is exhausted or pregnant? On Friday, Rih Rih got sick on stage while she was singing "What's My Name?" in Portugal, and ran off stage so she could vomit.

She later Tweeted: "yep! I ran off stage to throw up, halfway thru What's My Name. made it back juuuust in time for RudeBoy."

I really hope she is just sick because that ain't my baby. Check out the footage for the show below!