Have your period while pregnant?

Hi ladies … so I’m currently 3 days in on AF. I’ve taken like 7 test before and they all were faint UNLESS they were evaps. I have lower back pain, my nipples and breast were ITCHY omg so itchy but now it’s slight pain in my breast.. and nausea… so my question is has anyone had a period and be pregnant? Is it possible? Should I go see my doctor?