need some help.

Tracy
My little girl is about 5 weeks old but here lately she's getting really hors sound when she crys or anything and sound really like she's really stuff up and sneezes all the time. But about a week ago I called her doctors office bc it sound like she was starting to get a cold well i did what they told me with her being a preemie there wasn't a lot I can do but anyone have some ways that might help???