Frozen, congrats on the weight loss! What are you studying?
I'm 31 and I'm back at school getting a second degree in ChemE. I do take food with me to school. I take a yogurt and fruit for breakfast, and salad, nuts, veggies, etc for lunch. I commute, so I go home for dinner (an lunch on some days.) If I do eat on campus, its always a salad, no dressing, no croutons, etc. But I really do try not to eat on campus because its so expensive.
I've not made it to the gym, but advise you to try to make use of one if you have access to one since you are paying for it.
Some people have noticed and I just thank them for the compliment.