Congratulations!
Be positive that you have done something and don't underestimate intangible achievements, i.e. finding your way around campus/library. I seem to remember my first week being a little bit about sorting out some books to read, and more about settling in, picking up my cheque, getting a computer set up and getting my library card etc.
It's swings and roundabouts - sometimes at the end of the week I feel I have accomplished a lot, sometimes I wish I could have done more.