Thank you for your replies!
...yes, I hope it will get easier with time...! I am quite sure, I am not dealing with PPD, as this feeling doesn't come as a surprise...actually I knew it was going to be there, as I am very aware of this being my last!
DH was fine with two children, so FOUR is a lot for us!!!
What is so weird, though, is that one part of me is fine with being done... I know, I wouldn't want to have a baby after 35... I know that dh is too old (in our opinion) to father another baby...we don't have the resources to provide in a way we want to, for more than four...our life is organized in a way, that we could not fit a fifth, sixth, etc. child...I will have my hands full, bringing up our four in the way we want to...I am looking forward to my "after-mommy-life" with dh...dh did a HUGE step towards having a family of four, and there is NO WAY he would ever consider having more, and, frankly, I would never ask him to...
So, me being sad about moving on is just so unreasonabe, and I am trying to figure out how to find a more positive outlook and come to peace with what I know is right, and best for us...
Thanks again for your replies!