 [ Symptoms ] i had line on from my under stomech to navel am i pregnant m in my 4th week of my period cycle can i take pregnancy test today 3rd jan 2015 my period day s 6th jan 2015 am i pregnant [ Disease ] dm refers to one of the ingredients on the cough medicine it stands for dextromethorphan which is a cough suppressant often used to quiet a dry annoying cough