You may have what is known as a Trained Night Crier. Babies who are put down to bed, after being rocked or held till asleep, never learn how to put themselves back to dream land, without parental assistance.
You might find this link helpful
http://www.med.umich.edu/1libr/pa/pa_nightcr_hhg.htm
I too thought my kid was colicy but the Doc gave me some simple adjustments to bed time routine and after Three days of hell, we had a baby that slept from 8 PM to 7 AM with 2 naps a day.
Sigh .. my "baby" is 22.
God Bless your new one!