Help!

I'm 4 days late on my period. I've had a wet feeling down there for several days now. For the past week I've felt more tired/exhausted than normal. A little bloated and nauseated too. I had cramps last night like I was fixing to start but I never did. I tested today and it said negative. I have been a little stressed the past couple weeks. And I have had stress cause my period to be late once before. But I never had any symptoms like I do now. Wondering if anyone else has been through this before?