Help! Should I test again?

I am waiting for Aunt Flo to show up cause I took a test and it came up negative, but today I noticed that my nipples seem darker and are wet like if I was sweating so I checked and a white milk like substance came out. I have also had food cravings, can stand stuff that I usually like, my sense of smell is a bit off, my appetite is bigger and I am eating smaller portions, with headaches, back aches, and mood swings and exhaustion.

Okay now I know this all looks like um girl really, but I took a test and it was negative. Should I test again? Do it sound like I could be pregnant? I don’t want to get my hopes up just in case.