Ask your doctor, but most say benadryl is ok to take.
My doctor said Tylenol cold. But for a runny nose and congestion I bought a Vicks vaporizer/humidifier (which you're gonna need when the baby gets here anyways). It works wonders. The first night I used it my nose stopped running instantly. All you need is water, a Lil salt, and the liquid meds that come with it. Its only 14 dollars at Walmart
Any Tylenol products that best fit your symptoms.