Selena Gomez Instagram: Pregnant Rehab Fight With Demi Lovato? [RUMORS] Justin Bieber’s Break Up Gets Unfollowed

Demi Lovato has unfollowed Selena Gomez on Instagram and posted a Twitter message mentioning that she is "swimming away from the bulls**t," leaving many fans wondering if the two former besties may be fighting over rehab issues of rumors of Justin Bieber's break up being pregnant.

Selena Gomez is upset at Justin Bieber after it was revealed he was spotted hanging out with three other women and posted a Twitter and Instagram picture with Chantel Jeffries.

Will the rumored pregnant and rehab singer break up with Justin Bieber for good?

"Justin posted those pictures with Chantel [Jeffries] to hurt Selena," a source told Hollywood Life.

"He knows how to push her buttons."

Selena Gomez has invited Justin Bieber to her upcoming secret birthday party, sparking rumors the couple may end up getting to a fight at the event over rumors of her being pregnant and entering rehab because of their last break up.

"No one wants [the Biebs] to go. All her friends want him out of the picture and just want her to have a relaxing birthday with no trouble and they think he's going to dominate her attention," an insider told E! Online.

"She doesn't seem to care that he spends time with other women and isn't always honest with her. She's hypnotized. Her friends just want her to enjoy herself for her birthday, but if Justin attends it might complicate matters."

Selena Gomez is rumored to be getting breast implants-this was reported shortly after Justin Bieber posted a photo of himself on Instagram working out.

Is it possible that rumors of the former rehab star being pregnant and Justin Bieber's attempts to get fit again lowered her confidence?

 "Selena is putting a huge amount of pressure on herself to be sexy because she's afraid of losing Justin," a source told Hollywood Life.

"She feels like she needs to be the hottest girl in the world to keep his attention. She's studied every girl that he hooked up with while they were broken up, at least the ones she knows about, and compared herself to them down to every last detail."

Selena Gomez and Justin Bieber were spotted on a double date with his grandparents at a Los Angeles zoo after he posted a photo of the trip on his Instagram account-it sparked rumors on social media the couple may be trying to get pregnant.

Last week it was revealed they are planning on buying a romantic getaway house together, Hollywood Life reports.