Adnan Ghalib britpreg.jpg

Star Magazine is reporting that pap Adnan Ghalib claims he's impregnated Britney Spears!

First, the mag reports that Adnan and Brit went to Rosarita Beach, Mexico to get married -- we're told they went down there so Adnan could take exclusive pix of Britney away from other paps' prying lenses.

And we think the reason for Britney's little belly bulge on the 19th (above pic) was a big dinner -- a few days later Brit was back to normal.

The Star says Adnan, 35, is happy, according to his friends, but that her dad Jamie is not. Oh really! "Her parents know she can't handle more children," a Spears family source tells the Star. Ha! Is it April 1 yet?