Well, of course not. You should not wear contact lenses if you suffer hay fever, it will just increase the risk of getting eye infection. First, you should know that when you have a cold which is caused by the virus, it may cause hay fever. And then your eye immune system can be weak, and then the virus will invade into your eyes, leading to eye infection. Of course, at this time, if wear contact lenses, which can be irritants, it will just make your situation become worse. In some cases, your eyes will turn to red and bloodshot, itchy too. For your situation, you should eat a diet rich in fresh fruits and vegetables, which provide lots of antioxidants, which may help boost your immune system, especially vitamins A and C. in this way, I think it can do a help to your eyes. Anyway, just be careful about it.