my son went upstairs and got one of the baby blankets he ask can he have it and I told him Yea. now…

my son went upstairs and got one of the baby blankets he ask can he have it and I told him Yea. now he wanna know if I will have another baby and can I name it Derrion (was planning to name second baby that) is it wrong to change my unborn son name to something else so we can have Derrion if I ever choose to have another kid???