I will be 20 weeks pregnant this Saturday and the last three days I've had what I thought was migraines which I have never had before. But I also have a very stuffy nose and a cough. When I blow my nose it's clear. I looked it up online and it seems like it's rhinitis from being pregnant. Any ideas how to get rid of this aweful headache and be able to breathe again. Humidifier isn't helping either.