To both Chinee & abc,
It's very early in your post op recovery phase to be concerned about shape, sizes and orientations.
This is major invasive surgery you've been through, AND it will take MANY months for the swellings to subside and ALL the internal modification to finally settle in to their correct place.
Even at the 12 month mark you should still be seeing changes occur.
Please don't compare you're outcomes with what you see on the Internet. You don't know what their circumstances were.
Regarding dilator sizes, you really shouldn't be going for the larger sizes until at least week 8 or later. There is a LOT of internal swelling that will take a LONG time to go down. Ice packs will help that.
And yes. It's natural. The larger the dilator the less depth you have. You need to remember the purpose of dilation is to ensure this "wound" doesn't close up AND to stretch the neo vagina. If dilation is done correctly you should not lose more than half an inch, when measured say at the 6 month mark.
When the swelling subsides, it will "seem" like you've lost depth, BUT in fact you haven't. It's just the swelling has subsided.
If you're still concerned, take some photos and email them to your surgeon for comment. They do have some duty of care, post operatively.
Huggs
Catherine