I was getting anxious... since last night, I could say from last night…

I was getting anxious... since last night, I could say from last night's night, I feel bad about the baby's movements (usually he gets active at night, but yesterday he didn't. At work in the morning I felt him, and by evening there wasn't much. I don't want to think about the bad, but worries won't let me rest. Has anyone had this experience?) By the way, I'm pregnant for the second time, the first one was fine on early term.