Missing FIRST meeting with Probation??

I am in California

Hello
A federal judge just sentenced me to 3 years probation (thank GOD) and no jail time. I have never been to jail and have serious medical conditions. So that was great news. I am to meet with my US Probation Officer next week (the 22nd I believe). My concern is I am not sure if I wrote down the correct date and she is on vacation. What happens if I miss the first date based on an honest mistake?
I will go in on the 22nd and see what happens. But what if that's the wrong date and the correct date passed?
I was on pre-trial waiting sentencing for over 4 years and was perfect with pretrial-never missed a call or a date! But this PO does not know me yet and its the first appointment. I even sent my lawyer the date via email to prove that I believe that is the correct date for the first meeting.
Thank you for any help

I am not sure what you are asking anyone here to do. Act according to the paperwork you received.

Call your attorney and get the probation office's phone number, or if you know where you are supposed to go, call the office and ask them to check their calender, they normally keep appointments and schedules I would think like any other office.

One more thing I wanted to add and I am NOT trying to be a smarty pants.....with regard to the serious medical condition comment............the law supposes that if a serious medical condition did not keep a person from committing the crime in question, the punishment for the same would not be an undue hardship.

In other words, if a person is well enough to commit the crime, then they are well enough to go to jail for it.

Just a general observation.