Sadness about being done having babies

I had my second baby back in November, and now I have a healthy three year old and an 8 month old. We are deciding about more permanent forms of birth control and my husband agreed that getting a vasectomy would make the most sense. I can't help but feel sad even though I know I don't want more babies. We are lucky and blessed to have two healthy kids, and pregnancy stinks. haha Has anyone else felt this way? What did you do to make it better?