I finally cured it. See inside.

I coughed like hell before. First, I took these to stop it:
1. Mucus Relief Cough from Walmart (green package, about $9, has Guaifenesin 400mg and Dextromethorphan HBr 20mg). Ask your doctor whether it is OK if you are pregnant.

 

2. Equate Allergy Relief (has Diphenhydramine HCI 25 mg)

Then, a pear before going to bed:
http://bbs.wenxuecity.com/health/236688.html