Thanks guys. I don't know what was going on with my stomach, just on the drive over to the gym I was feeling sick. After the rowing I felt REALLY sick, rather than just sit there I decided I'd take a walk and reevaluate after I got back. Felt fine afterwards (15 minutes later) and did the above.
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."