Hello, My Name Is Don, Today I Had My Pain

Hello, My name is Don, Today i had my pain management Dr Appointment , after having been prescribed percocet for 2 to 3 years ( 10 / 325 ) i was taken off them and instead was prescribed Dilaudid my question is are their any medications i should not mix and i understand the potency of this medication and only take as directed as i do with the oxycontin im also prescribed what other medication should i not use while on this new dilaudid Thank You, Don