Then maybe too much water is not good for you. Drink water only if you thirsty. I read somewhere that you have to have a pinch of salt so that the body can assimilated the water.My two cent opninion.
Terri, i don't get head aches often either. My first round of hcg i had a pretty bad one for about 3 days. I have heard this is normal, I'm not sure why.
I did round 2 again after the waiting period and i didn't get a headache,go figure. I have always drank alot of water. More so on hcg. I drank 1 gallon or more daily usually filling 2 half gallon glass mason jars with filtered water and liquid flavored stevia. This helped me drink it. I also drank at least 3 qts of tea daily. Also made in mason jars with plain stevia. Usually in the evening i juiced 1 lemon mixed in a qt of water with liquid lemon drop flavored stevia and had that,or a chia tea(home made) with a little raw milk and cinnamon flavored liquid stevia.