Please help!! no oil pressure after oil change!!

Turn the engine over by hand at the crank and see if the distributor is turning. If not, the shaft between the distributor and oil pump broke.

*** Didn't think that through! Distributor can turn, but the shaft to the pump may be broke.***

It can be a little messy, but I always like to put some oil in a new filter so there is less empty space to prime after an oil change.