Do these symptoms mean I need to see a doctor?

I have been sick since Friday morning. I have been suffering from what I thought was the regular flu or cold. I have been prone to getting bronchitis since I have gotten it about 3-4 times since I was 10. I have a severe cough that hurts immensely in my chest and throat. I have a huge amount of congestion making it hard to breath and puts a large amount of pressure on my head and chest. I also have nausea and a sore throat. The symptoms have gotten progressively worse from Saturday, normally when I do have the flu or a cold, it lasts about 2 or 3 days and then is over. I realize that this is normal time range for it, but I haven't experienced this much pain and fatigue or exhaustion with being sick. Do you think I should visit a doctor or wait it out and what do you think it is...normal flu?