I have days like that. Sometimes my baby is quiet and I secretly freak out, have tears in my eyes but don't say anything to anyone. Then after a few hours she wakes up properly and goes nuts and I feel foolish

I sometimes drink loads of ice cold water and try to rest and feel her move.
I feel it's worse when I haven't been sleeping well and have low blood sugar.

I'm sure everything's fine, but if you feel like something is really wrong you could maybe call your midwife?