Can't bond with my bump

I'm 25 weeks pregnant and just can't seem to bond with my bump. I saw my baby on the 20 week ultrasound scan and she looke super cute sucking her thumb etc, I went out and bought loads of adorable girly stuff. Even after all that, I can't seem to Bond with her. She doesn't feel like mine and when looking at her pictures and clothes, it's like looking at someone else's pregnancy. I'm not having the best pregnancy, with every symptom going and I'm starting to resent the baby making me feel so ill. I feel so guilty, will I love her when she's born? Will my feelings change? At the moment she feels like nothing to me and I'm looking on like an outsider.😔