Triple whammy!
1- you're recovering
2- you're pregnant
3- YOU'RE HUMAN!!!
But guess what? It's OK. You're totally normal. It's OK! These blues will pass. They will come again. Being Human includes feelings of all kinds. Try to notice yourself thinking about the feelings. What stories are you telling yourself about the feelings? How far into the imagined future are you living?
What if you just offered yourself compassion, let go of the stories and simply comfort yourself for the feeling Right Now.
It really is OK.
Here... Put your left hand on your right rib cage... And leaving it there put your right hand on your left rib cage... Now say to yourself 'it's OK, I LOVE YOU' and SQUEEZE!!!
