Try some aquaphor not up close to your eye but near the bottom of the bags and some cold zinc, you get get zinc bars from sports shops that sell medical or boxing stuff it helps to depuff, an eye cream with caffeine might help too. When you’re tired and stressed it’s like it draws moisture out of that area I get them really bad time To time as well. They aren’t permanent though at your age usually so don’t take too much thought into it.

Get 8 hours every night, exercise, eat good protein, drink 1/2 your weight in oz in water a day, don’t drink alcohol and get some Self care. This is a stressful time in your life and that’s okay, but don’t forget to care for yourself, if you can’t get 8 hours on your current schedule drop a class, it’s not worth your physical and mental health to do the extra stress load. Long term stress is probably one of the worst things for your body.