What Causes Recurrent Red Itchy Bumps?

Hello sir, I am anitha, am having red itchy bumps particularly at night 2 to 4 am I have consulted dr she advised me to takeallegra8mg 3 days. But not recover after 3 days. Meantime am taking fol 123 tab for trying to conceive.now okacet 10mg again.dr again she told me take platelet and wbc to see in blood test.