I can hear how tough this round is for you! It's interesting that your morning sickness is dragging on longer this time around, especially since your first was smoother. Have you checked in with your gynae or PD about how bad it's gotten at 16 weeks, just to rule out anything and maybe get some relief options? Fourth pregnancy body is a different beast altogether, but there are things they can suggest if it's really affecting what you can keep down.
strong mommy 💗