Amber Portwood's relationship and pregnancy came so soon after her split from Matt Baier that many have suspected that her Baby Boy, who is due this May, was actually fathered by the "Teen Mom OG" star's former fiancé. In fact, even Portwood's ex-boyfriend, Gary Shirley, the father of her older child, daughter Leah, is unsure about her second child's paternity and during last night's episode of season seven, he discussed his thoughts with wife Kristina.

After learning that Protwood and her boyfriend, Andrew Glennon, were expecting a child together after dating for just weeks, Gary Shirley questioned the timeline of the reality star's pregnancy and noted that she had to have conceived her second child within one week of the start of her and Glennon's romance.

He then said, via Radar Online, “Hopefully it’s not Matt’s!”

When did Amber Portwood and Andrew Glennon's relationship begin?

“I think there was a break between [Matt Baier] and [Andrew Glennon]," Kristina Anderson responded [VIDEO]. "I think. I don’t know.” Portwood and Glennon met on the set of "Marriage Boot Camp: Reality Stars Family Edition" as she attempted to work out her relationship issues with Baier in mid-2017. Then, after filming wrapped on the popular WEtv show, Portwood and Glennon went public with their romance.

“They don’t realize, ‘Do I really like this person?’ Does he really like her? I hope [Amber Portwood] realizes what she’s getting into,” Gary Shirley said.

One month after becoming "Instagram official," Portwood and Glennon learned they were expecting during a trip to Hawaii.

Weeks later, Portwood confirmed on Instagram that her second child was a boy and later told her fans on Twitter that his name would be James.

Amber Portwood and her boyfriend fought during Monday's show

During last night's episode, Amber Portwood made it clear that she wanted to know what she was having before the child's birth [VIDEO]. Meanwhile, Andrew Glennon had other plans and hoped to be surprised by the child's gender when he or she arrived.

“You don’t understand at all,” Portwood fired. “I’m done! I’m pissed off. I’m very annoyed. I don’t want to deal with dumb little petty bulls**t." In the end, Glennon said that if it adds so much stress to not know in advance, Portwood should certainly find out what they are having as soon as possible.

Amber Portwood, Gary Shirley, Kristina Anderson, and Andrew Glennon, can be seen every Monday night on "Teen Mom OG" season seven at 9 p.m.