Pls relax yourself, because there is no problem with your eyes. Everyone's eyes will tear at something which is sensitive, such as the coldness and wind. You can sense it just because you are more sensitive than others. As far as I know, there are some reasons that make your eyes sensitive. On one hand, you are more sensitive because of your gene, which will not be stopped just can be released. On the other hand, if you make your eyes over working, and if you lack of sleep, you will also find your eyes are sensitive to the wind. Nevertheless, you can stop it by your actions, that is to say, you can ask the doctor to give you some eye drops, which will help you. Also, you should let your eyes have enough rest and try your best not to make your eyes over working. Hope my advice can help you.