Can you feel the baby

Catherine • Happily married! Mother of a Kindergartener boy named Fox 🦊 (that's his middle name) my little angel baby 😢✝️and on 9/11/20 we had are little 🌈 baby names Sonya Lynx 💕.
So I was wondering has anyone felt like they can feel the baby moving at 18wks, or am I feeling something else? This is my first baby and I can feel muscle flinching in my lower stomach. My friend said it could be gas traveling but idk.....