Disclaimer: I don't own Glee. Although I wish I did.
Positive... It was a word that people alway connected with happiness and joy. Rachel Berry like many others couldn't help but link the word to some sort of good feeling.
When she saw the positive sign that came after all her a's she definitely felt happy.
When the crowd gave her a positive response after one of her solos she always felt joy.
But as she sat on the cold tile floor of her bathroom, turned up the three white sticks in her hand, and read positive on each of them she couldn't help the despair that swept through her and the tears that poured down her cheeks.