Getting my SO more invested

I'm 20 yrs old and he is 19 (20 in September)

I am currently 25+2 with our first son (no children between either of us. Clean slate)

I was pregnant last yr but had a mc at 10 weeks.

So this is my first time dealing with this sort of thing. I'm staying with fiance at his parents house (not living there but they let me stay for however long I need) and his oldest sister is also pregnant, a few weeks behind me.

Fiance is very slowly getting the reality of what's going on. He just felt his son move a few days ago. He talks to him a lil but more often he likes to blow raspberries on my belly and see son kick around from the odd noise/feeling.

My preggo nightmares have started. I'm in a lot of pain emotionally and physically. He hears me say I'm in pain but I don't think he understands the extent of it.

This morning at 5am when he was leaving for work, I asked him to start doing me a favor. When he gets home from work, just give me 5 mins or so and just lay with me and talk to me and our son. No video games or phones. Just to be there with me for a moment.

He asked why. I think that's pretty self explanatory.

Is anyone else having problems getting SO to really understand what's going on with you?

I need advice.

Sorry this is long.

Ftm 25+2