Possibly pregnant?! Need good advice ?

I asked a question last week in regards to my period. I had brown "bleeding" instead of regular blood for my "period". The blood was never red and I didn't have to use a tampon/pad because it was so light. Since the day after I've had lower abdomen cramping and I feel bloated constantly. Also, I feel pressure down there. My period is now 9 days late, so this afternoon i took a test and it was negative. I've done some research on early pregnancy symptoms and I feel as I have a few of them. I'm confused since the test was negative. I need some advice :)