My son is 2 years old and got watery eyes problem?

Watery eyes. This time of year the most common cause would be seasonal allergies. If it is a more chronic problem, could still be allergies, but different triggering agents. He's a bit old for tear duct stenosis, but if condition has present since birth, this too is possible. Then there are irritant causes such as smoke, dust, dryness, perfumes - that list is endless. Treatment depends on cause so see doc.

Related Questions

My son seems to always be having watery eyes and running nose whenever he is outside. Could he have allergies? He's only 1 1/2 years old.

Yes. Although atypical to have allergic rhino-conjunctivitis at such an early age, allergies can occur at any age. The best therapy is to avoid his triggers. No need for medications unless symptoms are severe and cause distress. Read more...
Eye Allergies. Checking allergies in someone so young is difficult. Oftentimes it can be a pet that causes the problems in such a little one. An allergist can perform blood work (rast) testing to find out if there are allergies. Skin testing is preferred but might be very hard to perform on a 1.5 year-old. Read more...

2 year old woke up fine, sneezing and watery eyes this afternoon, and by early night time felt very warm and had chills and tired. Came on fast, flu?

Maybe . . . Best to go to doctor in AM, assuming otherwise doing ok. But if any change in activity (granted it should be past his/her bedtime by now), then don't wait, just go immediately to ER. Of note, there are many viruses, of which influenza (the "flu") is just one. To be even more precise, there are many types of "flu". Biggest problem is that viruses don't respond to antibiotics. So always wash hands. Read more...