First Kick

Hi mummies I'm a first time mummy and at the end of my week 18. When will I feel my baby kicks? I'm super excited and I'm not sure if I missed any kicks as idk what they feel like. I've read it feels like flutters but how really does that feel like? Few days ago I did feel one tiniest thump but that was it and it didn't occur anymore. So I wasn't sure if that was a kick? I wonder if I'm able to feel it at all any time soon.