Tracy, before WLS I took Sudafed. But that is off limits now. I use Tylenol, hot tea, extra Vitamin C, as much water as I can pour into my body and multiple hot showers.
The tea has oil that helps thin out congestion. The hot shower does the same thing, especailly after you have flooded your body with fluids, it helps 'drain' your system. For the real adventure spirit, use a baby nasal aspirator and 'snort' 3 parts lukewarm water and one part table salt. (My GP preaches this, honest!) It will 'aid' a river of release from your sinuses. I do this IN the shower since it is messy. The whole thing about a head cold, is to get the snot out of you. This trick works.
For more Vitamin C, I use an herbal product, Emergen C. It is slighly fizzy so if all carbonation hurts you, be very careful. I start the Emergen C at the first wiff of trouble, drinking five or six of them each day.
In the end of all of it..............sleep as much as you can.
Hope you feel better!