A lesson learned. Maybe.

I've had THREE, count 'em, three firsts on my runs recently. 

1. I saw someone I know while doing my pace run last week. I was shocked! And thrilled! 
2. I topped 30 miles last week. Believe it or not, this was a first for me! Like I said, kicking a** and taking names this training cycle! Look for a February recap probably tomorrow.
3. This past Friday night Mr. Joanna and I hosted a new city/new friends get together at our house. It was so nice to feel like we've met enough people to throw a party like this. And it felt so good to laugh with friends. Even the kiddo had a blast, and upon waking up Saturday morning asked if he could go downstairs to see all the people. Say it, collectively, awwww. He's adorable. But enough gushing. How does this pertain to running? It meant that I was not getting up early Saturday to run 14 miles. So the 14 miles got put off until Sunday afternoon. This is where the lesson learned/first while running enters the scene.
   
   I got through my 14 miles more or less unscathed. There was some fatigue in places, but nothing unusual or unexpected. When I got home I grabbed some water, stopped to put my distance into Running Ahead, check email. Then I realized that my stomach was cramping and I was freezing. Time to quickly jump in the shower. I tried. I really tried to take a cold shower to help my legs. But I was so cold to begin with that I just almost cried when the water hit me. I could only stand it for about 15 seconds before I had to turn up the temp at least a little.
   
   For at least 6 hours after my shower, my stomach hurt and all things digestive were off. So here's what I need to know--was this caused by:
1. The fact that I consumed 3 Gu's during the run--one before, one at mile 7 and one at mile 13, and all 3 had caffeine in them. 
2. The fact that I did this run on Sunday afternoon and probably hadn't eaten enough (since 7am I'd had a bowl of oatmeal and a PBJ, the run started at 1pm)
3. The fact that I'm on a zpack for the sinus infection (yes, still--it turns out I was allergic to penicillin, but that's a whole other story). 

I think the lesson learned is not to take 3 caffeinated Gu's, but I don't know. All I know is that it was an awful experience post-run, and I want to do everything in my power to avoid it happening again. Have any of you ever had this happen? What went wrong?