Day three juice fast

Well, so far this fast is proving very difficult. Or at least should I say yesterday evening and this morning have been hard. I had forgotten what a terrible headache detoxing produces. Last detox, I got my headache on the evening of day 1 and it was over by day three. This time it started the afternoon of day 2 and is still here the morning of day 3. Hoping to see the end of it today. Today is the day of the salt water flush. Believe me, drinking a litre of salt water is the last thing you want to do after 2 1/2 days of juice fasting, but I'm hoping it might see an end to my headache. I'm treating myself to a cup of camomile tea after this!!