Yes, this is common.
What helped my kids were chewing on a dampened frozen wash cloth. Or, the Hylands Teething tabs. It's homeopathic.
Each child has their own levels of difficulty with teething...my daughter had no problem, my son got fussier. It may also make nursing/feeding more uncomfortable. But it's normal. It will pass.
Also at night, it may be harder for them to sleep, or they may wake more. This is also a temporary thing that can happen with teething.
Just see how your son reacts.. no worries. They also sometimes get more "drooly" or have a slight fever, or get a little looser poops. Some people also use Tylenol. But ask you Pediatrician first, about the dosage.
Also, rubbing his gums may also help. Each child is different. My kids primarily liked to chew on things... this helps to massage the gums as well.
Take care,
Susan