My son is 2 years old, last month around the same day he got a bad diaper rash and a fever, he develop a cold as well,  it away after 3 days, again this month same he had a diaper rash and a fever now. I'm losing my mind. Why is this keep happening. He has a habit of putting everything in my mouth, even once he ate his own poop once, and we are a joint family, so my relatives children do go to school and come and play with my baby.. what's causing this recurrent fever.. please help me out..