I've been feeling sick to my stomach, diarrhea, cold chills, etc since starting my diet of healthy foods. why? and is there anything that can help?

Adjustment: Sometimes, when the body is so used to a certain diet, it can take several days/weeks to adjust to the newer healthier diet. It could also be that you coincidentally acquired a stomach virus. Try resting, clear liquids for 18-24 hours, then slowly starting soft foods/brat diet and increase as tolerated back to your normal diet. Good luck, stick with it.