Recurrent Fever for 7 years old boy.

Hi, My son 7 years old ( weight 17.5 kg) got recurrent fever every week. 1st time mild fever with cold/cough and after a week only fever(ate chill icecream outside that day) and came back normal within 2 days. And again after a week, he got fever temperature around 99 to 100..his pediatrician suggested below tests, cbc, peripheral smear study, urine and widal. He said reports looks normal and no concerning. My son fever is also reducing now in 3 rd day. But in the report all blood counts looks normal but he has low lymphocytes. But doctor seems not concerned, can anyone pls confirm here is it normal range. Total wbc - 14480( normal range in lab 5k to 15k) Neutrophils- 64.1 %(normal range 30 to 53 %) Lymphocytes-25.2%( normal range 55 to 60 %) Pheripheral smear study impression - Mild microcytic hypochromic anaemia with neutrophilic leukocytosis and mild shift to left.