Hey ladies, first time mom I'm at 18 weeks and about 5-6 days, and I was just wondering what does it…

Hey ladies, first time mom I'm at 18 weeks and about 5-6 days, and I was just wondering what does it feel like when the baby moves? Like does anyone have an explanation on how it feels or something cause idk. So last night I woke up to use the bathroom and as I was doing so I felt like I had a gas bubble that was stuck inside and it felt like it was jabbing at the front of my uterus and then it moved along my uterus like kinda in the way of a soft yet firm finger gliding across my uterus but on the inside. So just wondering if what I experienced was baby.