Not feeling kicks🤨

So last week I felt the baby kick. It felt like a muscle twitch, one so pronounced I felt it with my hand.

The next day, baby was kicking again and I could see my stomach move when he did it.

A few days later, baby was kicking again and my husband was even able to feel him.

For the past four days or so, I haven’t felt any kicks... is this something I should be worrying about? It’s starting to freak me out. I know the kicking isn’t always consistent in the beginning, but this feels a little unusual.

P.S. I am 18w2d