Not feeling it

Anyone else excited to get pregnant and once it happens you feel really disassociated? I’m struggling to even believe I’m pregnant ( multiple tests and ultrasounds confirmed) I am 15 weeks pregnant and I just don’t have any emotion towards this pregnancy. I was so excited to have this last baby but once it happened it feels so empty. I know once I see my precious baby it’ll all be so overwhelming with happiness but it’s just getting there that I’m struggling with. Any advice? Help? I’m due October 19th. This is not my first baby by far. If that helps.