Being pregnant changes your body in so many ways, besides your growing abdomen. One of the things to be on the lookout for is signs of a urinary tract infection (UTI). Unfortunately, pregnancy can put you at higher risk for a UTI. If left untreated, it can have some pretty dangerous complications.

So why exactly are you more prone to a UTI now, and what can happen if it's not taken care of?

What's with UTIs in pregnancy?

Until recently, the medical community wasn't sure why pregnant women were more susceptible to UTIs. Now, scientists have discovered shifts in lactobacillus—the health-protective bacteria in the vagina and urinary tract—occur in pregnant vaginas and this increases the risk of UTIs, according to Betsy Greenleaf, D.O., the first board-certified female urogynecologist in the United States.

"The microbiome has become a hot topic in recent years," Greenleaf said. "[It's] the environment of bacteria that lives in an area of the body." Women, because the rectum, vagina and urethra are all located close together, have a higher