Yes, Candida infection is common during pregnancy, regardless of recent sexual activity. Pregnancy hormones can cause changes in the vaginal environment, making it more prone to yeast overgrowth. Factors such as increased estrogen levels, changes in pH balance, and weakened immune system can contribute to the development of a Candida infection. It is important to consult your healthcare provider for proper diagnosis and treatment options. They may recommend antifungal medications that are safe to use during pregnancy. Additionally, maintaining good hygiene practices and wearing breathable underwear can help prevent future infections.