Michael Phelps and his fiancée have shared some big baby news!

Michael Phelps and his fiancée Nicole Johnson have made a huge announcement.

The couple is expecting their first child!

The couple, who got engaged in February, broke the news on social media Wednesday. 

“We found out 8 weeks ago we were expecting … Today we’re over 12 weeks and it looks like we’re having a boy!!!” Phelps wrote on Instagram. 

In the picture, the two are looking very loved up by a swimming pool while the model held a tiny, MP-branded speedo. The former Miss California also shared their news on Instagram.

“Today marks 12 weeks and 5 days of us having a little one and yesterday we learned we’re having a BOY,” she added. “We couldn’t be happier!!” 

Phelps and Johnson, both 30, have been dating on and off since 2007, and have long remained friends. After splitting in late 2011, the couple rekindled their romance in 2014. 

The Olympian has been working hard to make his way back to the swimming pool after two DUI arrests, a stint in treatment and a six-month suspension from competing.

“I feel like I am okay and I am happy with who I am,” he said. “I feel like I’ve learned so much about myself, who I truly am. I can honestly say there aren’t many people who have seen who I really am.”

Meanwhile, just hours after the baby news broke, the swimmer’s self-proclaimed ex-girlfriend blasted the star in a rant. 

Taylor Chandler – who claims that during her teens she changed her name and used testosterone blockers before having sexual re-assignment surgery – took to Facebook shortly after the 30-year old broke the baby news. 

Taylor, 40, once described their sex life as “amazing” after claiming they met on Tinder. However, Michael has never publicly commented on the matter.

“Let’s just say he makes Charlie Sheen look like an amateur,” she alleged in the lengthy post.

She continued: "He took everything from me, so yes I am bitter. He made me emotionally crippled, broken and a mere shell of who I used to be. After losing my career I did an adult film, not exactly something I ever would have chosen. I was trying to survive. That turned into me riding his coat tails… lol.”

Her comments also took a nasty turn as she spoke about his fiancée’s pregnancy: "I hope that baby is born free of STD's. He's not the safest when pursuing his extracurricular activities outside the girls he is "dating"," she went on to allege.