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.
You will probably start to be aware of something when you're about 18 to 22 weeks pregnant (Gillieson et al 1984) , although it can be later. If you've had a baby before, you'll know the tell-tale signs. You'll possibly start to notice your baby moving around between 15 and 18 weeks (Gillieson et al 1984) .