When I stand up my vision goes blurry and my head feels like it's being squished.
This is how I feel when I'm dehydrated. Up your water intake.
And Tylenol is NOT bad for your baby, if it were your doctor would not recommend it. If you really don't want to take it, put ice packs on either side of the base of your neck (down by your shoulders). It restricts blood flow to your brain and lessens the pain.