" How long have you two been married?” I asked her. “One month—today!” she answered with a little smile. “Well,” I said, “you have a bladder infection. In fact, this is a fairly common problem in newlyweds. It’s called honeymoon cystitis. It’s usually not serious. We’ll start some antibiotics tonight. You’ll need to get another urine test in a few days to be sure you’re responding to treatment.” “Why is it common in newlyweds?” she asked. “Well,” I said, “when a woman isn’t used to having sexual relations, sometimes a little infection can get into her bladder. "

― Michael J. Collins , Hot Lights, Cold Steel: Life, Death and Sleepless Nights in a Surgeon's First Years