Every morning, right after i wake up i start sneezing, and have an itchy nose and watery eyes that sometimes itch. what could i be allergic to?

Probably dust: Fairly common symptoms for dust allergies. Builds up as you sleep. Allergies cause itching & tearing. Over-the-counter allergy medicine & eyedrops help relieve it. Zaditor (ketotifen) is a good eye drop for allergies. You can also take over the counter medicine like loratidine in the morning or zyrtec before bed.

Sneezing: Could be anything. Start by trying salt water washes prior to going to bed and upon waking in the morning before taking any medications. See an allergist for testing to find out what you are allergic to.

Dust or pet: You are probably allergic to something indoors. It is most likely dust/dust mite. If you have a pet it might be a cause as well.