A Bodeket (or Bodekes) Tahara, also known as a Niddah Nurse, is specially trained to help determine the source of bleeding for Taharas HaMishpacha/Niddah purposes. While not as commonly used as a resource across the US, bodkot are referred to very often in Israel to assess “questionable bleeding” – on bedikah cloths, for new Kallahs, and even occasionally for mid-cycle spotting.
Here’s a good summary from Nishmat: http://www.yoatzot.org/questions-and-answers/1169/
As a healthcare provider in the US, I was trained to do speculum exams with an eye for medical concerns. Here in Israel, I completed certification to become a bodeket – someone who understands the halachic ramifications of bleeding from various sites.
While there is overlap in the exam, and a bodeket needs to be aware of medical “red flags,” in some ways what we’re looking for is very different! It is frustrating for women to repeatedly get “bad” bedikahs, only to go to their OB/GYN and hear that “everything looks healthy and normal.” The OB/GYN isn’t saying something false – from a medical perspective, that cervix, etc., may look perfectly healthy. However, there may be a site (a petzah) getting irritated by the cloths that causes niddah shaylahs month after month. A bodeket can identify that site, describe it for your Rav, and obtain a “good” bedikah when uterine discharge/flow is not the source of the bleeding.
Please see my next post on “Cervical Ectropion,” a medically benign, very common petzah that sends women back to bodkot monthly.
P'nima Wellness 