When pregnant, engaging in physical activities like lifting heavy objects or fast walking can lead to issues with urine leakage, especially if the woman already struggles with it during stressful situations. This happens because exercises put extra pressure on the pelvic floor muscles and the abdomen, making it more likely for leaks to occur even if there aren’t usually symptoms at rest. The growing uterus also puts additional stress on the bladder and weak pelvic floor muscles, making it tough for a woman to hold in her urine for long periods, especially when her bladder is full. As a result, urine leaks can happen more often throughout the day.