During pregnancy, hormonal changes can lead to various oral health issues, including toothache and swollen gums. The increased levels of progesterone can cause gum inflammation, making them more susceptible to infection. Poor oral hygiene or pre-existing dental problems can worsen during pregnancy, leading to pain and swelling. Additionally, pregnancy gingivitis is a common condition characterized by redness, tenderness, and bleeding gums. It is crucial to maintain good oral hygiene practices such as brushing twice a day, flossing regularly, and visiting your dentist for check-ups. If you are experiencing severe pain or swelling, consult your dentist for proper diagnosis and treatment options that are safe during pregnancy.