DS is 5 wks today. Terrible colic, was just in eve but now during day too, screams and goes rigid. Tried infacol then gripe water now colief, no joy yet. GP says "just colic" but how do I know DS isn't lactose intolerant? GP away till 24th now. DH only sees DS when screaming for hours and worry that this behaviour is affecting how DH and I feel about DS Help!!