One of my things I do to check if bubs is moving is sit down and also drink the cold water. But mainly I sit or lay and focus on my bump for a bit. Sooner or later once I stop moving she starts moving.

I think if your feeling unsure you should call your midwife or GP. I was told if your babymoves 10 times a day then it's fine and not to worry about the rest of the day.

It's easier said than done not to worry about it.
I've in previous pregnancies got checked out if i hadn't felt much movement just for my own peace of mind.

Cheers Jac