Yes you can.
I don't get it, but girls can't get girls pregnant, fullstop.
Some do, some don't.
Yes, it is not as common to get pregnant while on your period, but you still can get pregnant. Sperm can live inside a women for a few days and it is definitely possible.
If she was pregnant it would be highly unlikely for her to get her period, however if she wasn't pregnant she should still get her period like normal.
Yes, all girls have periods. If you skip your period you are probably pregnant. Periods tell you that you are not pregnant.
Yes it is possible for a woman to still bleed fromher period even if pregnant. This may happen one to two times after fertilization.
Typically if you get your period you are not pregnant.
That alone is not a confirmation of being pregnant. A girl may skip her period for too many reasons. But yes a pregnant girl does miss her period.
If you are pregnant you will not have your period