If you try and get him to do something he doesn't want to do (or stop him doing something) he's trying to make himself vomit. And usually succeeding.
He's 17 mo and we're getting this routine every bed time now. No matter what we try.
He also does it during the day, eg. if he's throwing something/hitting one of us and we make him stop.
Everything he doesn't want to do results in him screaming and gagging until he's sick. You can hear him forcing it.
I'm so worn out and angry with it. Especially as I'm dealing with hyperemesis gravidarum and I'm finding it hard enough not to vomit as it is.