Baby movements? xx

Rio
I think I'm feeling my baby move🙈 I'm 18 week and 3 days and I only feel them when I lay on my back but it kinda feels like little twitches?? Or someones flicking me from the inside? Does this sound about right? It's not gas because usually when I have a gas bubble I trump afterwards 😂😂🙈😬 can anyone shed some light plz? Xxx