Hello,
Your symptoms are suggestive of pruritic urticarial papules
and plaques of
pregnancy (PUPPP). It is characterized by small red bumps
and hives,
and when severe, the bumps form large patches. This rash usually develops on the abdomen, and spreads to the thighs, buttocks, breasts and arms.
Anti-itching topical medications, antihistamines and topical corticosteroids can be used to control the itching.