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.
Wisdom Teeth: When Should They Come Out? Contrary to popular belief, not everyone has to have their wisdom teeth removed (or even gets them, for that matter). By the time you're about 13 years old, you should have 28 permanent, or adult, teeth. Your pearly whites may not have quite finished coming in, though; between the ages of 17 and 25, some people also have up to four more teeth making an appearance. They're so far back in the jaw that you may not have even realized it was happening until the dentist pointed it out. Known as wisdom teeth, or third molars, these teeth have the potential to cause serious issues, including pain, infection or damage to other teeth around them. If wisdom teeth are such troublemakers, then why do we have them in the first place?