R.K.
I would call the health department. Bed bugs need to be taken care of right away. An exterminator has to come in and spray then come back 2 weeks later to get the next hatching. The bugs will live in the electrical outlets and seams of the wallpaper and places like that then come out whenthey need to feed, They are tiny and almost clear before they feed and become black after they feed so they are easier to see.
They are so small they could get into the seams of your purse or breifcase or jacket or coat and you won't even know they are there until your home becomes infested.
The bed bug infestation un the U.S. has become so bad that in 2010 the Empire State building had to be treated for bed bugs. It's nothing to mess with. I wouldn't go back to work in that office until the entire building is treated.