Throwing baby showers, nonstop gifts, pictures and comments all over social media.
Gosh that's got to be hard to take....especially now with a baby on the way. I sometimes think family members go out of their way to over-do the attention they show on each other at these times, so they can really rub it in the noses of the family members who are on the "outs" with them. Social media is the perfect place for this and I have found it better to completely avoid any of their posts and not give then the satisfaction of knowing it has any effect on me.
I wonder if when your baby comes along, your husband will cave under the pressure of wanting his family to be a part of it ? It could be however, that if things are handled just right, they (his mom) might cave just to be able to see the baby.
I'd say, just play it by ear....take it as it comes....but don't let it spoil the special occasion of the baby's arrival.