Colic in Babies, Should we consult doctor?

My LO is 8 weeks old and he has been having episodes of uncontrollable screaming. I read about Colic and I believe that that's what we are experiencing. I am becoming helpless and sometimes even pacifiers don't help. I am worried about him as he's been loosing weight over the past week. Should I consult a doctor or wait for it to go away as he gets older??