Did a 25 mile ride today, fasted as I was planning on doing a few days fasted. Drank lots of electrolytes and a TBSP of MCT and took off. Ride was great, felt great when I was done, but slowly started feeling worse over the next hour, I felt a little faint so I ate about 300 cal of pecans. On a whim, about an hour and a half after finishing the ride and 2 more bottles of water and some sodium, I took my blood pressure: 127/77 which is at least 10 lower than usual for both numbers and really weird was my BP was 97, my resting HR is usually 57. Soon came really bad cramps then many trips to the bathroom (like 8 so far) each mostly liquid, but not a lot. It is now 4 hours post-ride, I have a terrible headache and BP is 132/71, HR 81.
Any clues?