Aww I'm so sorry to hear that you aren't getting your puppy
I'm 22 and just got my yorkie this year... my parents aren't dog people and would never let me have one. So I waited until I finished college and got my own apartment and a stable schedule. I thought about getting one while in college, but your college years are so unpredictable. You never know what your life is going to be like from semester to semester. What if you decide to pledge a sorority and you have to be with them 24/7 while you're doing it? Maybe you'll want to study abroad for a semester. You'll probably move 3 or 4 times throughout school.. are you prepared to re-train the dog in every new housing situation? What about roommates? I had to send my cat home to my mom b/c my roommate turned out to be allergic. What if the dog gets sick; can you afford to take care of it or will your parents pay for it? As much as you don't want to think about it, most college students are BROKE! Lots of stuff comes up in those 4 years.
You also have to think about your life after college. You could wind up getting a job that requires you to be away from home 10 hours a day. What happens to your yorkie then? Luckily, I work less than 2 miles from my apartment and come home every day at lunch. Dogs are a gigantic responsibility. I skip lots of fun twentysomething stuff for Howie. I work 30 mins outside of Philadelphia and if I didn't have Howie I would live in the city and be around lots of other fun people my age. But I have him, so I live in the suburbs close to my work so I have more time with him and he has a yard to run in. I rarely ever go to Happy Hours and I really limit my time out on the weekends with my friends b/c I don't want him to be home alone for too long. I don't mean to rain on your parade.. I'm just sharing my college experience and what went through my head when I was in college and wanted a puppy.
If this stuff isn't applicable to you, then I hope you find one soon! I was persistent in my search and was willing to drive a good distance and I got Howie for $800. These little dogs are definetly worth every penny!