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What was this about!? I mean, is there ANY chance that Charlize Theron and Sean Penn are trying to have a baby? We gotta ask, because it is pretty odd that they'd be going to the doctor together in Beverly Hills...

On Tuesday afternoon the lovebirds visited medical building together, and our photographers on the scene tell us that they stayed for about an hour. Clearly neither of them were in the mood to be photographed, and Sean was very protective of his lady love on the way back to their car.

Sean has two children with ex-wife Robin Wright (Dylan and Hopper), and Charlize adopted son Jackson back in 2012. She's 38 and he's 53, so it wouldn't be totally impossible, right?