Hello, I Have Over The Years Been Drinking Lemon Water

Hello, I have over the years been drinking lemon water from fresh lemons early in the morning at least an hour before breakfast, from which I feel I have gained benefits, at times I do include ginger, and turmeric, all raw products from our local markets. I have just recently though for approx an hour or so after consuming the drink, usually no less than 500ml to 2 liters, felt a slight pressure in my head and slight blurring of my eyes. My age is 71