Head cold and pregnant

L

I'm 39 weeks and 5 days went to the dr yesterday feeling absolutely terrible. Told my dr about my cold and she said not to worry about it sent me home with nothing no medicine. my symptoms just got worse and worse through out the day and I just keep feeling like this isn't very good considering how close I am to my due date. I'm pretty sure I lost my mucus plug yesterday as well and I'm dilated 3cm I'm so worried I'm gonna go into labor with this cold and considering that I'm really freaking scared. How can I get rid of this cold asap? Any natural remedies?