Question

I'm new to this so bare with me, 
I had my period on March 2-7th
I then got it AGAIN March 17-  up until well today still and its moderate to light, I have back pain and cramping ofcourse...
I've had intercourse 3x this mnth 
Dates are: 7/11/19th .. 
Has this ever happened to anyone meaning period literally 6-7 days apart? Or can I be pregnant?