15 weeks and bubbliness

Mandy • 29 years old - Married October 2013 - Mom of Baby Girl Dec 2015 😊 Expecting Baby Boy April 2018 ☺️
If I put my hand over the center of my abdomen right above my pubic hair line, I can feel this bubbliness. It's been pretty constant all day and off and on prior to today. I don't think it's gas. Is it my baby??