Roach in new apartment?

Idk if this was the right place for this, but my family just moved into a new apartment 1 weeks ago and tonight I just found a bug crawling on the floor that possibly resembles a cockroach...I am freaking the F**k out.  I can NOT have my son living with roaches...does anyone know how to identify a roach? I tried to look online I saved it in a ziplock it looks a little like  a German cockroach.  I am going to talk to the office tomorrow but I am so scared about this! Any advice?