Make sure you don't have a fever. I caught something when I was pregnant with my first, and I was out of state visiting my parents. I called my OB/GYN, and when they heard I had a fever, they got the number of a local pharmacy where I was staying, called in a Z-pack (antibiotic), and told me to go get it immediately. They also had me start on Tylenol right away, and take it every 4 hours. They were very insistant that I keep the fever down.
I thought I'd mention that since I haven't seen it posted yet, and it seems to be important. I know I can feel just awful for a couple of days and not have it occur to me that I should take my temperature. When I finally do think about taking it, and take some Tylenol, I feel so much better.