Advice?

So, I'm like a week and a half late for my period. My boobs are starting to hurt, but no cramps or anything. I've been exhausted. And I took a test last Friday and it was negative. Is it possible for it to still be too early or what? I need reassurance, because I want to know and it's making me go crazy. I did take a test this morning and it was also negative. So, what should I do??