if you read through the parenting group on MN you’ll see hundreds of posts like this. You are very much not alone feeling like this - do talk to your HV about PND.
Being a mum to a newborn is hard. Sometimes it’s exceptionally hard. Some babies are very difficult: grumpy, screamy, wakeful, vomity, endlessly hungry, bad at latching, tongue-tied, colicky, jaundiced, lactose intolerant, windy, refluxy, can’t be put down, don’t like the pram/car, hate the bath .. What did I miss? Loads I’m sure. There’s the odd one that just coos and smiles and makes all the other babies look bad.
And (not surprisingly!?) the bond between mum and baby can take time - it’s not always a magical, instantaneous feeling. So please don’t beat yourself up about that.
I just said good night to my precious 12.5 year old dd, and I can tell you despite a very rough start, every moment of my life for the past 12years has been better for having her in it. First six months were hellish but she’s utterly forgiven.
hang in there, new mum. In 12 years you’ll be answering someone’s post saying just what I’m saying today.