It sounds like you are herxing - sorry.
It's clear you are treating Babesia and head pressure is a hallmark symptom of it.
Please consider increasing your detoxing - maybe you can find a few things to add here:
www.tiredoflyme.com/detox-methods.htmlBuhner recommends 1/4 - 1/2 tsp Kudzu tincture 3x daily to help with this symptom. Herbs can be safely taken alongside abx.
Hope you feel better soon!