please help!!!

okay so when I get my monthly I get a really heavy period Like ever since I was 12 it's always been that way but this month I'm getting a little drops and it's early and I never get it early and last week I thought I was pregnant because I was getting symptoms but I took a test it was negative but I would've only been two weeks so was it too early should I take one again because I looked up that light bleeding is a symptom