Tylenol (regular or extra strength)
Tylenol-cold, sudafed PE (avoid use during the first 14weeks)
vaporizer
Robitussin (plain or CF)
Plenty of fluids
Hope you feel better soon..
Vitamins (especially iron), Tylenol (but not the kind with the sinus additives, unfortunately), chicken soup, orange juice, some caffeine, and especially, sleep. Chocolate will also help. Also, when you're home, put some steaming hot water in a big bowl and drape a towel over your head and lean over the bowl and breathe in the steam. Sorry, but none of the such-and-such "for colds" are good for you when you're preggers.
Good luck, take a huge pile of old washcloths to bed for the honking nose-blowing.