gmail no longer notifies me about emails

[ou2mame]

for the past few weeks, i haven't been getting all my emails pushed to my phone. i have the gmail app, and up until like last week, i have been getting every email.

now? nothing. maybe like one or two notifications, but i just checked my gmail account and i had 12 emails, none of which my phone notified me about. anyone know whats up? i was reading something about some stupid priority mail box or some shit, but i have no idea how to turn it off. i just want my emails, all of them, to notify me.