How do i know if i have a milk allergy?

What are the symptoms for a milk allergie because I think I might have one

I dont really no. but you really need to go to your doctor FAST!!1 this cud b serious/ dont take a chance drinkin, cooking, or getting it on u. im not spassing but it cud b serious.

If you get the same symptons when eating other dairy products you might be lactose intolerant. If you see a doctor he can run tests to see what it is exactly you are allergic too.

my sister is lactose-intolerant, and her main symptom is that she gets really bad stomach aches whenever she eats dairy products, but especially milk.

I just cough really bad when I drink eat etc or is it something else I don't know