JC Cueva is not the father!

It’s been less than a week since Teen Mom 2 star Kailyn Lowry confirmed that she’s pregnant with baby No. 3 — but fans can’t stop talking about her possible baby daddy! The paternity of her unborn child has been narrowed down to two men that she’s been linked to in the past — her MTV producer JC and her Delaware State University classmate Tyler Hill — and now she’s finally setting the record straight.

A fan mentioned Kail in a tweet which suggested that — like her TM2 co-star Jeremy Calvert, who was accused of cheating with another TM2 producer — she cheated on her ex-husband Javi Marroquin with JC.

“No…can’t speak for anyone else but this didn’t happen in my life lol,” the 24-year-old wrote on Twitter.

https://www.instagram.com/p/BHm3v-7hhuL/

MORE: Chelsea Houska Reacts to Kailyn Lowry’s Pregnancy Announcement!

Now that she shot down rumors of ever hooking up with JC, he is ruled out of the possibility of being the father. Tyler seemingly responded to a fan on Reddit denying that he is Kail’s baby-daddy-to-be — so it’s unclear who else could have fathered her child.

Fans are wondering if her ex-boyfriend Jo Rivera had anything to do with her pregnancy — since she was caught cheating on her then-boyfriend Jordan Wenner with him on an earlier season of TM2 and they already share seven-year-old son Isaac together.

MORE: Pregnant Kailyn Lowry Reveals Details About Her Baby’s Gender!

One thing is for certain — Javi did not father her unborn child. She revealed in her pregnancy announcement on her blog that Javi didn’t even know she was pregnant until she announced it last week. The former couple — who share three-year-old son Lincoln together — finalized their divorce last December, and one of the issues that ended their marriage is because they disagreed on having more children.

Scroll through the gallery below to see pics of Kail’s growing baby bump!