Dont worry girls, hehe it is completely normal to itch during pregnancy. Its the most common symptom also.
Try some of these:

wear loose cotton clothing. Tight lycra has a lot to answer for!
Itching may be soothed by dissolving a cup of bicarbonate of soda in your bathwater.

try dabbing calamine lotion onto itchy skin - especially soothing if you keep the bottle in the fridge.
A few drops of lavender oil (in the last three months of pregnancy) and/or tea tree oil in your bath may also offer relief from itching, whether or not there is a rash. Tea tree oil has proven medicinal benefits; consult packaging and enclosed literature to find out more. If in any doubt, ask your pharmacist or a qualified aromatherapist.

treat sweat rashes by washing frequently in cool water, and sprinkling on non-perfumed talcum powder. Your pharmacist may be able to suggest other safe treatments.

if a rash does not improve with these simple measures, consult your doctor. Specific anti-fungal or other treatments may be appropriate. Alternatively, she or he may prescribe antihistamine cream or tablets.
Kristin