The character of Sheldon Cooper was inspired by a computer programmer personally known to series co-creator Bill Prady. He is named in honor of actor/producer Sheldon Leonard and Nobel Prize Laureate Leon Cooper.
The infection is caused by bacteria. However, excessive use may irritate you. Soda also dehydrates you, and for proper urinary health you should be drinking lots of water, and also cranberry juice. Your physician was definitely right in telling you that it could have made the bladder infection worse.
These side effects can include headaches, dizziness, palpitations, stomach upset and diarrhea, forgetfulness, fatigue, insomnia, anxiety and some even more serious symptoms. These and other side effects have even been reported in people who drink only three to four cans of diet soda each day.