My 1 month old baby has a cold T.T

Mommies. Patulong T.T first time mommy po. And then ako lang po nag aalaga sa baby ko. Wala pong inlaws. So wala pong maka advice sa akin. 2 nights na since I have observed may sipon si baby during night time. Nawawala siya during day time. Okay naman siya so far. Hindi mainit. Pero syempre, I am still so worried. What to do po? Visit na kaming doctor?