Help!

Yesterday I had very light brown discharge and then a quarter sized spot of brown blood on the toilet paper. So I thought AF was starting a day early but nothing showed up on the pad or anything even today. I've been having cramps but they are not bad just noticeable and I've been exhausted and haven't had much of an appetite. Not sure if I should test. I really don't want to see a BFN but idk what to do someone help!