I think YABU as this is all down to communication and you having expectations of your partner being a mind reader as to what you want without just explicitly saying so.
Got back in and he paused TV briefly to say hello then restarted what he was watching. Over half an hour of an episode left (he knew when I was getting back). No interest in having a conversation. Would your partners do this? Not sure if I'm just being needy?? I was looking forward to seeing him and catching up.
If I was in the middle of watching something when someone came in I would pause it for a few minutes for a quick "Hello, how was the weekend?", "Good thanks, was lovely to see Auntie Muriel for a few days" but after that short exchange I would go back to what I was watching and expect the other person to want a bit of time to get themselves sorted and settled - take off coat/shoes, put away bags, come and join me on the sofa. Once they were settled and I'd finished what I was watching then that would be the juncture to expect a more detailed conversation about the weekend plans.
If the other person wanted to have a longer conversation I would expect them to say so eg "Hi, how was the weekend?" "Good thanks, I'll go and have five minutes to get sorted then I'll tell you all about it when your programme's done, I've got a lot to tell you." This then allows me to either agree with their plan, watch the end of my show and then give them my undivided attention or say "Don't be silly, you put your bag away, I'll put the kettle on and you can tell me all about it; I'll finish my show later". Neither of these options require me to be a mind reader to know which scenario the other person would prefer.
Personally, when I get home from a weekend away all I want to do when I get in is kick off my shoes, have a shower to refresh after travelling, unpack my bag and then flop on the sofa. Only at this point am I in the right headspace to want to talk to someone else.
He also didn't meet me at the station (I'm in my third trimester and it was half an hour walk home with bags). I could have asked him though. But I'd like to not have to ask 😞.
This seems like another lack of communication and to me it is making you come across as a bit of a martyr.
What was your plan for getting home? Did your plans fall through or did you just expect him to appear at the station? Why didn't you explicitly ask for a lift when an offer wasn't forthcoming? Why was there no arrangement made before you left?
If someone didn't ask me to pick them up then I would assume they had made other arrangements - whether that was a lift from someone else (if I knew they were travelling with a friend), public transport or a taxi - and it wouldn't occur to me that they were expecting a lift if they hadn't asked ahead of time.
Even just a "I'm due back on Sunday at 5pm, will you be free to pick me up?" would have saved you the walk. Your partner could then have either said yes and you could have arranged the specifics (eg when I'm getting picked up we always agree "The train should be getting in at 5:12 but I'll give you a ring when we leave [town 5 mins away]" as that is the perfect amount of time for them to get to the station without waiting ages) or said no and you could have made alternative arrangements - taxi/bis etc.