35 weeks pregnant with a head cold?

my wife is 35 weeks pregnant with a head cold (again)...must be the 3rd in a matter of months! She has such a hard time at night trying to sleep..between the head cold+not being able to breathe peoperly anyway, it's like sleeping with Darth Vader!! :-) Was wondering if there is anything she can do to help (with the breathing issue in particular)? I know a head cold just runs its course... Thanks in advance!