Teen Mom star Catelynn Lowell has denied a report that she's pregnant again.

While In Touch Weekly recently reported Lowell and fiance Tyler Baltierra -- who is the biological father of Lowell's baby, Carly, whom the couple gave up for adoption during the MTV reality series' first season -- are expecting a child together again, Lowell is insisting that's not the case.

"Don't believe everything you read, I'm definitely not pregnant!" Lowell told Us Weekly.

"I'm on the pill. And, I'm only 20 -- I don't want to have kids until I'm out of school and we're married."

According to In Touch, Lowell's longtime friend Jamie Pyrzewski received a phone call last month with the big news.

"She said, 'You're never going to believe it, I'm pregnant,'" Pyrzewski told In Touch, adding that in addition to herself and Baltierra, Lowell only shared the information with close family members.

"We were both quiet. I asked how she felt about it. She said she was nervous and scared."

Lowell was reportedly in "total denial" and panicked a bit after finding out she was pregnant for the second time, but the reality TV star quickly had a change of heart.

"She is now feeling complete joy," a family source told In Touch.

"This time, she knew immediately that she wanted to keep the baby. She's just so happy," another source added of the alleged mom-to-be, whom the magazine claimed is due to have the baby this winter.

Lowell and Baltierra, who were reportedly reunited with Carly for her second birthday during Tuesday night's premiere of Teen Mom's concluding season, have set their wedding date for July 15 of next year.