spotting help

Haleigh • Married💍11/05/16
I spotted for about four days. My period was due 5 days before this started. Nothing heavy completely out of ordinary. My period is usually full fledged bleeding. My spotting wasn't red it was brown some was a little light pink. But I didn't bleed enough to even wear a pad. What could this have been? I'm scared to take a HCG test because I'm scared of the negative outcome