Oregano, Sage, and Thyme Essential Oils. Oregano, sage, and thyme have all been found to be useful anti-inflammatories in both their powdered and oil forms.5 They work by both reducing the bodyâs production of pro-inflammatory compounds and by increasing its production of anti-inflammatory compounds.
1 Placenta previa is more common early in pregnancy and might resolve as the uterus grows. Placenta previa can cause severe vaginal bleeding before or during delivery. A C-section delivery usually is required if the placenta previa is present at the time of delivery.  Placenta accreta.
Who is at risk for placenta previa? Placenta previa is found in approximately four out of every 1000 pregnancies beyond the 20th week of gestation. Asian women are at a slightly greater risk for placenta previa than are women of other ethnic groups, although the reason for this is unclear.