I was diagnosed with delusional disorder 4yrs back.now im stressed out with work.my family says my delusions have got worse with this stress.possible?

See a psychiatrist: You have asked many questions about the delusions you are experiencing. It is very important to get help from a psychiatrist and discuss these questions there.

Yes, possible: Stress= asking a system to do more than it is easily designed to do for any length of time. Stress 'physical and mental' can make any illness symptoms worse.