This is a tricky situation OP.
I have been in your friends situation although I am now nearly third trimester with my first healthy baby (I have lost many babies before this).
As much as people like to say things like 'a true friend would try and be happy for you' or 'it doesn't take much to say congratulations' etc... It really isn't that simple.
I had to remove myself from every piece of social media I had at one point because of posts like yours. I'm not saying you're wrong to announce your news, you're excited and happy and want to share and I get that. But it was that painful for me that I couldn't even stomach just scrolling past things like that on Facebook, I had to remove myself for my own sanity.
Avoiding pregnant people or friends felt like literal life of death for me mentally. It wasn't about being bitter (really inappropriate use of the word but I think you know that) or a rubbish friend. I genuinely didn't care what people thought about me, it was for my own protection. I was depressed, on medication, I wanted to kill myself and would often fantasize about ways to do it, how if the next one died too I was just going to end it after this one last try. That's how serious it was and can be for people going through stuff like this. It's really no small thing for a lot of people and simply congratulating someone can seem utterly impossible when you're there.
I couldn't watch films or TV shows if a character ended up pregnant, seeing a pregnant women walking through the supermarket could have me leaving my trolley where it stood and going home to DH to cry for hours on his shoulder.
It isn't always logical but my mental state was in absolute tatters. I'm sure I was a shit friend to my pregnant friends during that time, in fact I know I was when I look back now. I made constant excuses to avoid seeing my best friend when she was pregnant because the thought of seeing her bump whilst I sat there with my flat stomach which should have matched her round one by now if my baby had just lived, was too much. It would have sent me spiralling.
Sometimes you have to put yourself first. And I'm so glad I did. In this situation I think you just have to accept that these friends aren't able to be here with you on this occasion. It doesn't make them bad or bitter people, they just aren't the people who are able to share in your joy right now and that's okay.