Can u be pregnant but still have a normal period ??

https://americanpregnancy.org/getting-pregnant/pregnancy-faq/

Some women. If you think you're pregnant just go to the hospital they'll detect it through your blood

Yes it can happen get a test or blood drwn it will come out if you are

You can bleed. It is not a period. During an actual period the lining of the uterus sheds. That doesn't happen if there is a developing egg implanted in the uterus.