I just want to echo, that this can be totally normal..... was for my firstborn definitely.
Before having children myself, I was the one that looked after others children, and who was asked to help get babies to sleep because I was so good at it...... I thought I would really take to being a mum brilliantly.
But when my firstborn arrived, it truely felt like I was looking after someone elses baby, and that they would come and take him to his real mum any time. I felt no real love for him, I cared and nurtured him, but that was it. I remember at around 6 months old, I felt like I really ought to feel love for him. But talking to others made me realise that that instant rush of love for your child when they are born, does not happen to everyone.
In the same way as some fall in love instantly with their partners, for others the love grows slowly over time. Neither is wrong or right, it is just how it happens.
For me I think it was around the 10 months mark, that I started to feel that, after all this effort I have put in looking after this child, I would be cross if someone took him away, but still did not feel what I thought of as love.
But now, 12 years on,,,,,, don't anyone try to hurt my lad, the mother tiger is there fully fighting. I love him with all my heart. It was a slow growing love, but no less real because of it.
To be honest, I do believe looking back retrospectively, I may have had post-natal depression, but it did not feel like it at the time, and it resolved with not intervention. But with the benefit of hindsight, it possibly would have helped to talk to someone about it.
Love will come, take each day and try to treasure them, they are precious.