I'm confused!?!?

Brittany

So for the past week and a half I have been having some pregnancy symptoms. ( sensitive breasts, nausea, tiredness, hot flashes, abdominal cramps, mood swings, constant headaches, and insomnia ) my period was due yesterday but started bleeding today. But tested negative yesterday. Is it possible to still be pregnant and have my period?? I'm not sure but why else would I be having pregnancy symptoms??