Headaches in Troubleshooting your Whole30 Posted December 8, 2018 Hi Catherine, did you figure out what caused your head ache? I'm on day 14 and have had a dull throbbing head ache for over a week. I have never had head aches before other than routine hangovers. Am drinking plenty of water and salt everything. I'm Irish, but never ate potatoes until now so I wonder if they are the culprit or if my body is missing something.