If your breathing becomes difficult, or you develop a rattle, or experience a sudden drop in energy level, it would be a good idea to see a doctor. Other symptoms are less obvious, so it has to be a judgment call.
Well, it’s difficult to tell about the energy level, it’s extremely low -— but the cold was so bad I was taking alot of pseudophedrine, and while it dries out the sinuses, it creates a false sense of wide awake alertness -— I stopped taking any of the Sudafed 3 days ago, so that alone could account for how exhausted I feel, ya know??