Please help me! Am I just over paranoid?

I am a week late and a little bit anxious. I have been late before and always feel this way. My boyfriend and I fool around sometimes but we always stop before getting way out of hand, especially if we don't have protection on hand. My period symptoms have progressively been getting worse over the last few cycles so I don't know how to interpret this. I'm not spotting or anything like that. And I had my monthly sob-fest tonight as well. Plus I have been super stressed in college as the dreaded dead week is approaching. Do I have anything to worry about?