TWoods:


A change of intent letter is not read or acknowledged. Go for your vacation first then go for birthing later.

Iphy 222
i remember when i was to come in, i was adviced to write a change of intent letter...but like you i wasn't pregnant as at when i got my b1b2 visa and i didnt feel i needed to...cos it will be on record and all, and when you want to renew, i believe may cause extra scrutiny to your application

so i didnt write one...i entered the U.S...no issues at POE....
since you have already written one though, i do not think you should write another...i'm sure they would have sent you some sort of acknowledgement copy...have that on hand to show on POE.

I hope this was useful to you