Here's some advice on managing colds and flu while pregnant, and what meds are safe to take from MedHelp.org and the I'm Expecting app. You'll find these in Week 10 and Week 20.
You poor thing! Pretty much use saline solution to clear out your nose and sudafed was cleared by my doc. Just normal sudafed. I would ask your doc for sure though :) I Hope you feel better soon!