Avoid anything that says it will 'dry sinuses' because there are sinuses in your breasts, too --and the drugs aren't body-part specific.
Drink a lot of water --most headaches (that aren't sinus infections) arey dehydration, which will also make your cold symptoms worse. Or, better still, some hot water with lemon juice and honey --the steam will help your sinuses, the lemon juice is a good boost of vitamin C and the honey is just plain good for you, and your lungs, and can even help a sore throat. Four or five mugs of that a day and you'll find your cold much shorter than normal.
It can help a lot to always breathe through your nose. It's hard, when your sinuses are stuffed, but it helps keep them clear as your body won't let you suffocate, the muscles in your sinuses can pull up and away so you can breathe --they just need to be convinced it's necessary.
A large bag of salt&vinegar chips plus lots of water can kill a cold.
at 3:45 PM on Nov. 1, 2010