For you, there's a real spiritual edge to this fear. It flares around the very things that draw you closer to God, and that's worth paying attention to. You are not powerless here. The peace of God is something you can actively stand in, armed with His Word and His presence. Don't ignore your body, but don't underestimate the spiritual fight either. God hands you weapons for this, and the peace He gives is meant to guard your heart and mind.