I think my newborn son is allergic to our dog.... how can I be sure?

what makes you think he is?

he wheezes, sneezes and coughs. and when I took him to my parents (they have 3 dogs) it was worse

sounds like he is, does he have an appointment with his doctor? you should ask just to make sure he is

Take him to the doctor

he has a doc appointment today so I think I'm going to ask. thanks @january10th @babyboolala

Yeah u should! I'll send up a prayer!