Definitely Get One of Three

The Messenger of Allah (sal Allahu alaihi wa sallam) said: “No Muslim makes a dua to Allah, without being granted one of three things by Allah: it hastens the fulfillment of what he has asked for; or it is saved up for him until the Day of Judgement; or it prevents a similar kind of trouble from happening to him – unless it was for something bad, or something that might break family ties.” [Tirmidhi, Kitab ad-Da’awat]

Duas bring only Khair (goodness). They either hurry the arrival of desired things or keep calamities away or turn into good deeds for you on the Day of Judgement.

The only thing is that your need should be pure and you do not ask for something bad or something that might cause the breaking of family ties.