The kidney is not one large filter. Each kidney is made up of about a million filtering units called nephrons. Each nephron filters a small amount of blood. The nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process.
Generally speaking, first babies tend to engage from about 34 weeks to 36 weeks. However, some babies only engage once labour starts. Try not to worry, though. Even if your baby hasn't engaged by the time labour starts, in most cases, it's not a problem.
How Long Is Too Long to Be Engaged? According to the Knotties who responded to our 2014 Real Wedding Study, the average length of an engagement is 14 months. But that's just an average. Some engagements can be super short (like a month!) and some can last for years and years. And we say there's no âwrong or âright length of time to be engaged.