This is the first hormone that is going to make an appearance in your body as soon as you get pregnant. Known as the Human Chorionic Gonadotropin hormone, hCG is the first hormone to be picked up by a blood or urine test to detect pregnancy. In any
given normal pregnancy, the level of hCG tends to double about every two days in the first 10 weeks and you’ll notice this rise if you get a blood test done.
hCG basically increases the blood supply to your pelvis, which is why you are bound to have an extremely sensitive bladder all through pregnancy. The blood surge that it causes actually makes your bladder want to do away with even the tiniest amount of urine. Also, the rising levels of hCG are the reason behind your morning sickness, but you can rest-assured that this side-effect of the hormone will taper off by the second trimester.