Don't worry about it. You felt like s**t, that explains the result and that sometimes happen. You wilp bounce back. No doubt about it.
Yikes this sounds not fun at all! Hope you're feeling better soon.
Darn! Too bad AG! Shit Show Express - I am on it with ya - it happens, and then it is behind you! :)
Last year the course was dry and temps were below normal for the invitational. The opposite this year. Slow running and hot temps make feeling shitty feel even shittier. You pushed through despite not feeling great. That shows toughness. Way to tough it out kiddo.