Before you start dealing with your pest problem, it's important to know what ones you are dealing with, ensuing that they are indeed bed bugs and not other biting insects such as mosquitoes or fleas.
Spotting bed bugs can be difficult as they only come out at night due to their nocturnal nature. During the day, the little bugs tend to hide in cracks and crevices near their preferred feeding area - usually a bed.
Once you've narrowed this down and have identified that you have an issue with bugs, it's important that you deal with them as soon as possible.