Could it be a possible that I could be allergic to dairy products?

I been thinking about this. I could be allergic to dairy products, due to my sinuses may effect me of eating it. I think that I need to go to the doctors and see what they said. For now, I will avoid dairy products. I think that it would help me to lose weight. I don't want to offend people, but, when I have any dairy products, in a few minutes or so, I cough up mucus. It really drives me nuts! It would make me give up dark chocolate that would have less milk solids like Hershey's. I been searching for alternative dairy-free dark chocolate, but it cost a whole lot. Anyway, the search continues.

So, does anyone know a good dairy-free website that would be easy?

I will keep everyone update on this.

Lindsie