I was exhausted when I finished because that last battle was a roller coaster. I had to keep going back and re-reading parts because it was 2 AM and I was like 'wait WHO just died?!' When she killed off my dearest Fred...omg. Sobbing.
And don't even get me STARTED on Neville during the final battle, I was a MESS. I thought for sure he was going to die after telling Voldemort he'd join him when h*** froze over
All in all I had such a feeling of accomplishment when it was done, but I was also upset that it was done