When an individual has a pinched nerve in the lower back, for example, symptoms of pain will usually radiate down the leg. A pinched nerve in the neck can cause pain to travel from the neck, through the shoulders, down the arms and into the hands. Muscle spasms in the back commonly coincide with pinched nerves and can cause weakness in the arms or legs. The two most common pinched nerves in the lower back are L5 (lumbar 5) and S1 (sacral 1).
Most pregnant women start to get the queasies when they're about 6 weeks along, but some can experience morning sickness (which unfortunately can occur morning, noon and night) earlier. It will most likely subside as you enter the second trimester.
There are early detection pregnancy tests available that can confirm pregnancy as early as 6 - 8 days after conception has occurred (well before a missed period). Early pregnancy symptoms can sometimes happen before a missed period and before a positive pregnancy test. Especially the 3, 4, 5, and 6 weeks pregnant signs. Early pregnancy symptoms and signs are usually related to the pregnancy hormone hCG or Human Chorionic Gonadotropin which is responsible for pregnancy signs.