I have had aching teeth for the last 3 days and was concerned as i know i have no problems with my teeth at all. So i googled it and found the following in Wikianswers : Sensitive Teeth during Pregnancy Yes, infact it is a common sympton of pregnancy to experience discomfort in the mouth and sensitive teeth. Many women go through periods of teeth sensitivity and, as a dentist, I recomend Sensodyne Yes, gums become more sensitive during pregnancy. As hormonal changes occur, there is an increase of blood flow throughout your body that can cause swelling, sensitivity and tenderness in your gums. So am feeling more optomistic that this is our month - at last!!!