I think for them it can be a slow and difficult process. My ex really didn't want a child - the news of the pregnancy broke us up that day - and for the first two months all he would tell me was that he didn't want and wasn't ready for this, but was a man so would try to be there. Two months later he showed his face, after I almost told him to walk out of our lives because I got tired of hearing the same thing. He's slowly come around since, but sometimes it feels like baby steps, and occasionally I do feel like strangling him. I do think it would help if your boyfriend agrees to come with you to appointments, for my ex it's been good to see and hear the baby. I have a lot of ultrasounds and now he looks forward to them, says he likes to see the baby and that our baby girl looks just like him. I think he's crazy lol, but I let him claim her because I think it's a good sign.
He still struggles at times, but overall I try to recognize that he's really trying, and I try to remember that I see qualities in him that would make a very good dad...I honestly think that once he can see her and touch her in real life he's going to fall head over heels, so he'll be there at the birth and be the first to hold her. It requires a lot of patience and sometimes, just shutting my mouth, but I tell myself that it's best for my baby that she know and love her father, so I try to support him in this journey.
The sooner you tell him the better I think. You've got to be up front with him.once he goes in with you to hear the babies heart beat hopefully his heart will melt. This is your first pregnancy so I take it he has children from a previous relationship. I'm happy for you and he will probably be happy too but may need some time to take it all in. Heres to a happy healthy 9 months of pregnancy!
i agree with the first poster, the best way is to just come out and say it. All you can do is best happy for yourself and your baby and hope he comes around.
Just tell him. There's no good way to tell a guy who doesn't want kids that he's having one. So be honest, and hope for the best. If he reacts badly, give him time...maybe he'll adjust. Good luck, I know from experience exactly how nerve-wracking it can be to have that conversation.