Hi G
I agree with bluestar! I give the baby a pacifier too. I thought maybe 3 weeks was too soon, been using it all along. The hospital was using them but I brought my own. He doesn't use it all the time, but my pediarician yesterday told me it was ok and that the American Academy of Pediatrics says it helps prevents SIDS and helps babies learn to self sooth!!!

Few great books my sister gave me that are really helpful:
Babys first year week by week
Baby whisperer

They talk a lot about soothing baby, colic etc. You should get them. Fun reading all the things they learn!