Refinning process of my diet

Day one of refinning my diet is going ok, its amazing though how I am noticing some headaches and things.

7am - Lack of sleep last night, tired. Headache
Breakfast 2 glasses of water
1xEgg white
Cheese
Mushrooms
1/4 tomatoe
1 slice of ham
Cup of tea

10am
handful of nuts

Headache gone, feeling tired but had a lack of sleep last night.
Sluggish and want to go to bed.
1130- 3 slices of pork
Pieces of cheese
cup of beef broth

Had a sleep
Wake up
130- a handful of nuts
3pm, pump bottle of water, im sluggish, have been doing housework to try and ignore symtoms, bowels are feeling a bit crampy.Headache back.