Gender disappointment and not feeling connected to baby 😓

So my whole pregnancy I swore we were having a girl after 2 boys. This pregnancy is just so different from my others and nothing is the same. Fiancé swore it was a girl and that was that. No one could tell him any different. Well went to my anatomy and scan and our little baby is a boy. I felt bad because I wasn't excited or anything. I was just like ... okay... omg... wow. I think the lady doing the ultrasound noticed as she did it really fast and said everything was all set. Well I'm going through gender disappointment and still haven't accepted the fact I'm having another boy. My kids both wanted a brother so bad and I'm happy for them. If it wasn't because of my kids I would probably be crying and sad. I felt like I lost something. Fiancé doesn't care if it's a boy so he says but when he found out he was just like oh my god are you serious. He tried to make me feel better by saying there's always next time and we can keep trying until we get out girl, but next time is our last time. I already planned for four kids. I am still processing this as it happened yesterday and at times I'm okay and excited and other times I'm just blah. I don't feel as connected to this baby. Even before we found out what we were having I always felt something was off and I feel so bad for feeling this way. Why do I feel this way and why am I not connected to my child? I was connected to my other two before we even found out they were boys. 😓