period while pregnant?

I just wanted to know if anyone got a period while pregnant. I got a bfp on 8/31/16 and started bleeding on 9/7/16 with cramping which is like a real period. I haven't tested again. My pcp did a blood test on 8/31  which confirmed early pregnancy. I am just waiting for the results for a sonogram. I just want to know if anyone experience some like this or similar before. 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors