I need to know what medication I can take for a runny nose and a bad cough while I'm pregant?

Natural is best. For any medications during pregnancy, please ask your obstetrician. From my perspective as a boogordoctor, you can't do better than simply rinsing your nose with salt water - saline nasal rinses. Please take a look at my med education blog site, boogordoctor.Com, for articles on rhinitis of pregnancy. Best success! and congratulations!
Plain Mucinex (guaifenesin) Plain Mucinex (guaifenesin) 600mg twice a day is generally considered safe in pregnancy. Plain Claritin or zyrtec 10mg is also safe on pregnancy.