Period 1 week after last

sam

My period ended last week. For the past 2 days i’ve had 2 huge breakouts which only happen during my period and yesterday walking on the treadmill my back was hurting which is also one of my symptoms. But i knew my period just ended so i didn’t think anything. Today i went to wipe and there’s blood. I’m assuming a period again? why would i have one when it just ended ? mines never irregular like this