So How Far Along Am I?

Previously, I wrote incorrectly that Day 1 of my last cycle was also Day 1 of pregnancy. AF showed up on December 22, so I had been thinking that I was 4 weeks 3 days pregnant on Beta Day and 4 weeks 5 days pregnant on the day of Beta #2.

So I was surprised yesterday when my CCRM nurse mentioned that I was 4 weeks 2 days pregnant as of yesterday. I’ve never been through an FET before, since we had nothing to freeze with IVF #1, so I had to e-mail her and ask her to explain. Here is what she wrote:

“The length of pregnancy is all determined by the age of the embryo.  On the date of egg retrieval we count that as the day of ovulation (which during a typical month is usually two weeks after the start of a period or 2 weeks along in the 40 weeks of pregnancy).  We froze the embryo at the blast stage which is then considered 2 weeks and 5 days pregnant, so on the day of transfer we considered you 2 weeks and 5 days.  9 days later (the date of your first HCG) you were 4 weeks pregnant and today you are 4 weeks and 2 days.”

I thought this information might help those of you preparing for an FET who haven’t previously been through one. Maybe everyone else already knows this, but it was new to me, so I thought I would share!