Boyfriend didn’t congratulate me

Basically we’ve been together nearly eight years and the last three I’ve been getting a degree in nursing. Well a couple of days ago I found out that I’m finishing with a first class honours. I used to really struggle academically, so this is a huge deal. I rung my boyfriend and he was just like “okay that’s cool”, no kind of congratulations or that’s great. I asked on the phone “do I not even get a well done? And he just said well I always knew you were gonna get a first.

So am I being really stupid for feeling hurt? Like I’m not expecting him to go all out but it just would have nice for him to say he’s proud or something. We live together so he’s had plenty of opportunities to acknowledge this.