One of the first prenatal questions to face a woman, when was the first day of your last menstrual period. This is asked to help estimate the date of birth. Sigh…I received my own personal gestational wheel in class last week.  The lovely plastic double disks are a gift from Bayer Pharmaceuticals advertising a type of intra-uterine contraception I will no doubt be learning how to administer in a few weeks. Thanks Bayer, because why should I take 20 seconds to do the math in my head (add 7 days, subtract 3 months) when I can spend 10 digging your disk out of my pocket, 20 fiddling to getRead More →