Can't get it off my mind!!!

This is so maddening! I have two little boys, almost 2 and almost 5. I am not ready for another baby right now, though one day I hope to try again. But I simply cannot get pregnancy off my mind! I miss being pregnant, my stomach muscles tend to twitch (yes it's only like a muscle spasm) and it just reminds me of when my boys would kick. I know so many people that are pregnant, I almost have to start counting on my toes! Haha. But I'm just not in a good enough place in life right now to support another baby. Anyone have any advice? Please. I would greatly appreciate it.