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.
I also can't emphasize how many people I know who got pregnant on the pill. If you had unprotected sex two weeks ago..you should not have a problem...Usually the times to get pregnant are between 17-10 days before your missed period.You have between a week or two where you actually CAN get pregnant. As for you, if you have not have your period since May 16th that should be a problem.f you had unprotected sex two weeks ago..you should not have a problem...Usually the times to get pregnant are between 17-10 days before your missed period.