It's critical to catch it early. Now is the time when you can make it shorter and milder. What I usually do these times is taking Vitamin D and Vitamin A. It helps a lot. If you have the clean form (oily drops), take 50000 of each now, in the evening, and tomorrow morning, 3 times in sum. And take loads (50mg) of zinc, too. Make the room warm. Get better soon!