The main symptom of placenta previa -- and the greatest risk to you and your baby -- is vaginal bleeding. If you have bled too much, you may have other symptoms, such as anemia, pale skin, rapid and weak pulse, shortness of breath, or low blood pressure. The bleeding that signals placenta previa may occur at the end of the second trimester or beginning of the third trimester. It may be heavy or light. Bleeding is usually painless, and it may happen without labor or during labor.
Quick Answer. On average, approximately 35 percent of people never develop wisdom teeth. This is highly dependent on ethnicity; nearly 100 percent of indigenous Mexican people, for example, never develop third molars, while almost 100 percent of indigenous Bantu people of Angola do develop them. Continue Reading.
Whereas most people have four wisdom teeth, some people actually have more or even fewer. If you have more than the typical four, your dentist will probably see these teeth on digital X-rays. The chances that you'll have extra wisdom teeth are fairly slim. About one or two people in every 100 will face this dilemma. Supernumerary teeth can occur elsewhere in the mouth, too. It's possible to have extra incisors, canines and other duplicate molars.