@proundmommy, it's probably gas lol. I already have a child and pregnant again and this little one didn't start kicking until 20 weeks! My first I think I felt around 17 weeks.
trust me momma when they start kicking you'll know it lol mine doesnt stop now haha and she thinks mommy's bed time is play time it is an amazing feeling though:)
pretty sure you cant being the baby is like a blueberry lol. maybe gas bubbles😂 i always confused the 2 even at 16 weeks i felt kicks and gas bubbles were the same feeling