At what week did you feel the first kick?

Lulu • 2 boys💙💙 (4 & 5), wife, and SAHM. Currently 🤰🏽baby #3.
I felt something on my right lower abdomen several times today I felt like something was pushing out. Is this the baby kicking or is gas trapped in there? Btw, I'm 16wks n 1D.