Anybody else's partner not excited about baby? :/

So first off please no judging, I dont need it right now...

My partner and I were ttc for about 3 years. During that time he supported me in trying, but never did more on his part to try (doctor visits, etc). I didn't think much of it. I thought the excitement would come with those two lines.

When I found out i was pregnant, I was jumping for joy! He just said "that's awesome" and went to sleep. My heart was pounding! I spent all night looking at baby stuff.

Well now I'm almost 15 weeks and still nothing... I have to beg him to rub my belly or say hi to the baby. He doesn't care when I show him the baby things I've bought and he doesn't engage in conversations about our future child.

I have no family or friends so besides him I have no support network. No one to announce to. No baby shower. Nothing. Every scan, every doctors appt, every milestone is celebrated alone...

I hope he changes. But for now I feel totally and absolutely alone. And it sucks.

EDIT: He has been to appt, he's seen the baby and I have a doppler so he hears the baby every day. Thanks for all the good feedback. I suppose I am being a little too emotional and he might be overwhelmed. Thank you ladies. I appreciate anymore insight.

Also, he does get excited about things. Anything to do with guns or WW1 and WW2...