Could I be pregnant?!!

So I started my period on July 11th ended on July 16th. Which is the norm for me. However I started again on July 27th went a full 6 days and stopped. On August 11th I noticed a bit of light spotting very light pink. I have not been spotting since. However I have lower abdominal pain and discharge. I took a pregnancy test and it came back negative. I feel like I'm getting symptoms of a period and not sure if it's that or I could still possibly be pregnant. Can someone please help.