Adjusting to motherhood

Anyone else out there not adjusting well?  My daughter is almost 3 months... I've been home with her since birth (I'm a teacher and not going back until sept). I find myself getting sad every day bc I feel like my life is over. My body isn't the same, I have lingering aches and pains, I feel tied down to the house and baby 24/7, and as much as I love my daughter, I don't really enjoy taking care of her. Is this a sign of post partum?  Or is this something that gets better?  Looking for supple here please ... I've already judged myself enough ... Please don't add to it.