Your immune system is apparently a bit compromised, so you are right so far by saturating your body with plenty of fluids. Also make sure to get enough sleep when you can. Usually drinking ginseng tea and taking Zinc Tablets and Echinacea before a cold grabs hold of you, will definitely help ward off an oncoming cold. In addition clear hot chicken broths will help you feel better. A cold like the flu is a virus, so must run its course. If you haven't gotten a flu shot yet, it may be a good time to do so once your feeling a bit better. As you may now know we are entering the flu season and the flu virus for one can stay on surfaces like door knobs for up to ten minutes. younger children also shed the flu virus for up to twenty-one days. These are just a few extra tips that I threw in to help you out in case you do encounter the flu in the future. I hope some of my suggestions help you to feel better soon!