Well, generally speaking, pink eyes can recover by itself and you may not need something to do. pink eye is caused by inflammation of blood vessels. Often termed as conjunctivitis, the infection affects the eyes through allergens, bacteria or viruses. In other words, it is caused by the irritants. And it can be worse if you have not taken some measures to cure it. So you can do something to speed up the healing process of pink eyes fast. For example, you can put some cool teabags on your eyes and change it frequently. Maybe you can wear an eye patch to protect your eyes too. And in my opinion, eye drops can be a good way to try.
Yes, the pink eyes may get worse over time if you don't treat it properly. If you keep the good habit of life, sleeping well and eating regularly, the pink eyes will recover itself. However, you should keep the habit of good hygiene. You should keep on using the eye drops to release the pink eyes. In addition, you should go outside often because the pink eyes are contagious.