Looking for some historical facts on how a woman was determined to be--or not be--pregnant in the majority of human history that did not include doctors' pregnancy tests. I've written a chapter in which a character believes she's pregnant, so she visits the village midwife. The midwife determines that she isn't. If she really were pregnant, it would only be about 6-8 weeks from conception. I've kept the description of what actually happens between her and the midwife vague, but written it with the assumption that the midwife really can tell, accurately. In the absence of modern methods of determining pregnancy, how would the midwife know? I would love to find a method that actually works, but barring that, I'm willing to take a not-necessarily-true old wives' tale and make it true for the purpose of my world building.