I found the following:

Symptoms
Some kidney stones pass on their own when they are small before causing any symptoms. Larger stones block urine flow and cause painful symptoms -

Renal pain which is intermittent and severe radiating to groin, and testis in males is the most striking feature
Pain worsens during movement
Blood in urine
Pus in urine
Fever
Difficulty in urination, feeling of urgency, frequent, painful, burning micturition
Nausea, vomiting, chills and fever are seen in case of infection
Urinary retention
Causes
The formation of kidney stones cannot be attributed to a particular cause, but several factors increase the risk.

Risk factors include:

Dehydration: Consuming inadequate amounts of water regularly for prolonged periods of time greatly increases the risk. People living in hot and dry climates and who sweat a lot are also at increased risk
Family history: People who have an affected family member are more likely to develop the disease
Certain foods: High sodium diet, oxalate and foods that increase acid levels
Obesity
Diseases/surgery of the digestive tract- Inflammatory bowel disease, gastric bypass surgery
Certain medical conditions- hyperparathyroidism, sarcoidosis, urinary tract infection, some cancers

I think I am dehydrated. My kidney function was sub-par last month- twice! I don't have any signs of infection. I have been peeing a lot, but I thought that was from the coffee. We'll see how I feel tomorrow, I guess.