Pregnancy symptoms or Pms?!?!

Joanna
Help !!! I'm currently 4 days late. Lmp was 04/07/16. Been having a white creamy discharge since 05/01/16. No odor or itching. Very sore veiny breasts since that time as well. They're very uncomfortable. Took a test 05/04/16 came out negative took it during the afternoon not in the morning. What's going on ?!?! Anyone experiencing this ?!?
I'll like to add Beginning around 04/24/16 I've been incredibly stressed. Not so much these past couple of days. But definitely the week before the expected af.