That's wonderful news about the parasites coming out! You will feel so much better when the only metabolic functions you have to deal with (including waste excretions) are yours, and not those of the parasites.
Do you think you are eating enough? Headaches can be caused by low-blood sugar, too. I was thinking that maybe if you weren't so strict with your diet now, you might feel better. You can always go back to a strict diet once you've finished, but it might be hard enough on your body to have to deal with all of these larger parasites dying in you without stressing it out with a strict diet. The reason I ask is that, considering how bad candida die-off can make you feel, it must be even more so with worms.