I also retained a lot of fluid during pregnancy, in fact I think I wasn't able to wear my rings from about 6 months onwards. I can't remember exactly when I was able to put them back on after having DS, but it was definately months rather than weeks... Because you've been carrying all that fluid all the joints will have loosened up as well so bulky knuckles can also make it difficult to get them back on. If it was me I would be leaving it at least a year or so before resizing rings etc, cos chances are they will fit again... Mind you, just as I was typing that I remembered some of my pre-preg shoes still don't fit LOL (but hopefully feet are a bit different). GL