Yes
yes
Yes, it's okay if you started your period and hump a pillow. There is no reason to think that this wouldn't be okay, both are normal and don't effect each other.
No
Unless you put sperm on your pillow (and most likely even if you do), it would be impossible to become pregnant from your pillow alone.
Why in the world would somebody become pregnant to a pillow? No, you can't become pregnant to a pillow.
No
If you hump pillows without wearing clothing, you may get the pillows dirty.
Yes
cuz there pregnant and we know how that comes around!
No didn't you learn anything in school .... you kinda need a guy, you know sperm, to make babies not the stuffing of a pillow....
yes