It is possible. I was actually talking to my coworker today and with her first child she was 7 months before she found out because she got her period every month
It is very possible. My mom didnt know she was pregnant with me until she was 4 months because she was still getting regular periods.
Some think so yes but I don't think so. The way i believe is by definition a period is the shedding of the uterine lining. If you are pregnant and have a period which sheds you uterine lining you will also shed the egg/baby. Once you get pregnant your body releases a hormone which tells it not to shed your lining because you are pregnant.. I believe some women can bleed during pregnancy but it's not an actual period and the bleeding is from something else besides inside the uterus. That's how I believe it but like I said some women will say they have had a normal period their whole pendency but by the definition of what a period is I don't believe it's possible.