Initial start up engine noise

Please help me Mr. wizard, I have a '99 accent,with 114.000mi. only problem at this time is when i initially start the car after setting overnite ,every once in a while the engine lifters sound like their clacking,after a minute ,evidently the oil pressure comes up &the clacking quit's.It seem's to me like I have excessive bleed-back of oil,I have no check engine light& my o.b.d.2 reader shows no trouble codes,any ideas? thanks for your time..Bubbles