Is Britney Spears pregnant, or does she just want to keep everyone guessing?

The pop star and her [article id="1579490"]paparazzo boyfriend, Adnan Ghalib,[/article] were photographed Monday night by Ghalib's agency, FinalPixx, while browsing pregnancy tests at a Rite Aid drugstore in Los Angeles.

On Sunday, she and Ghalib were photographed and videotaped at no less than five different drugstores in Southern California, apparently looking for an item they couldn't find. At the time, it was speculated she was looking for sleeping pills, since Ghalib quipped to his former paparazzi cohorts, "We're ready for some sleep," when asked if they were ready for court the next day. (She ended up [article id="1579606"]not being ready at all[/article].)

But the photo of her perusing a pregnancy test called "Answer" just raises more questions -- as does the fact that she's sporting what looks like a diamond ring on her ring finger and, when she visited a Mercedes-Benz car dealership on Friday with Ghalib, she was wearing the short, white lace Monique Lhuillier wedding dress from her 2004 marriage to Kevin Federline.

As the rumors circulate that Spears is trying to get pregnant (see the cover story of the new issue of OK! Magazine); hoping to marry Ghalib (who is already married, to a woman named AzLynn Berry); or considering converting to Islam, the singer's former assistant Alli Sims spoke out against Ghalib in the new issue of Us Weekly.

"I do not think Adnan is a good person," Sims told the magazine. "I think he only has bad intentions. He has always given me a weird feeling and creeped me out. I wish he would just go away."

Noting that she doesn't know Ghalib outside of his role as a celebrity photographer who trailed them "for the last eight months," Sims thinks Ghalib made his move to get into Spears' inner circle when Sims went home for the holidays. "Because he knows good and well I would have been like, 'Who are you?' " she said.

Spears has a tough time keeping people in her life, Sims said, because people often sell her out, "making up lies and selling stories." Ghalib, whose former photo agency has been getting the exclusive on much of Spears' most recent whereabouts, has been accused of the same. But there is hope as long as either associate Sam Lufti or Sims is still in the picture, Sims said, because Spears still trusts them.

"When [Sam] is around, she ends up doing what needs to be done -- court appearances, meetings, etc.," Sims said, although Lufti's companionship on Monday didn't help Spears make it up the court steps.

"When you go through your whole life just listening to what everybody tells you to do, you get to a point where you're not used to having to pick out yourself what is really important," Sims said. "If we pulled her aside and were like, 'No, this is really important,' it's not a fight, it's not an argument. It's, 'Oh, OK, OK, OK. Then let's go ahead and get it done.' But at the end of the day, it's her life. She is 26 years old, and she is going to do what she thinks she needs to do."

Even if that means [article id="1579624"]losing custody of her kids[/article] and causing concern that she has a mental illness.

"She's not crazy," Sims said in her defense, while also admitting, "But I don't even really know what's going on."

Ghalib, for his part, told Us Weekly, "We are just enjoying each other's company. [Britney] is not what people perceive her to be, and that is unfortunate."