baby movement at 21+4 days?

Lizzy • I'm a first time mom to my handsome little boy who was born 8.26.17💙 he makes me incredibly happy. follow our journey and I'll follow yours!😘🙂
I have only felt 1 kick today. Is that strange? Seems like yesterday my baby boy has became less active. Maybe he's just sleeping lol but I miss he's little kicks 😭 I want to feel them more. I think my placenta might've moved to where it's blocking the kicks..because I feel like these gas bubbles kinda from the Inside and outside. But they don't feel like normal kicks I usually get, I have had those gas bubbles kicks ever since I could feel him at 18 weeks but it was a good decent amount of regular kicks I could feel up until now?🤔