Hi, Im new to this site!

So my mustang GT 2006 [V8 4.6] just started recently to have this issue, I start the car and after few minutes running it; it sends the message "Low Oil Pressure" and starts to do a knocking sound.

If I turn it off and let it cool down few minutes before starting it again it goes well but as soon as few minutes pass the sound and message comes back.

Im thinking it could be the oil pump; if this is the case...do you guys recommend me getting a high pressure pump...

2006 Mustang GT low oil presure (HELP!)