It seems your contact lenses are irritating your eyes for some reasons. Maybe they are inside out, this can happen with soft contacts. You can check if you have soft contacts by trying to bend them, if they are bendable, they are soft. Your eyes also need some time to adjust to your contact lenses. You shouldn't wear them any longer than 4 hours a day for the first to weeks, after that add 1 hour every week. You can wear them for a maximum time of 12 hours a day, after this time they will start irritating. I don't know if you just started wearing them all day long when you got them, if you did, don't wear them for about 3 days and after that start over, this time starting at 4 hours a day. Also make sure you clean your contacts very well. If this doesn't work go to your optician and he/she will help you. If there's nothing wrong with the contact lenses according to your optician go to your doctor, he/she will give you some eye drops. Hope this helps.