Stomach cramps, fever 102.3 which has broke, diharria, nausea?

The summer bugs? Likely a stomach bugs--viral gastroenteritis of the summer, or some bacteria got on your food--picnic food is common source. Since the fever subsided, it is a good sign. Tums/peptobismol for 24-48 hours may help with cramp/diarrhea. If not better in another 2-3 days, or if worsens, consult your doc. Good luck.