I'm really sorry for your news.
My faith perspective is that it's not god"s will that we have or don't have babies. Or anything that happens, really.
It's just chance.
For me god gives me strength in the good and the bad times, and as much as possible is a moral compass.
Like I said from the start the real issue the Catholic Church (and i was explaining rhe CC position, not mine) has with IVF would be destroying the embryos.
You should certainly attend Mass if you want to, regardless, and as you'd not waste embryos, no reason at not not to take Communion.
Mass is not for the "good". Everyone is human and, if anything, people at Mass should be trying to get better, not celebrate how good they are.
Like I also said earlier, there's faith and there's the Church. There's quite a lot in the Church that is tradition rather than what it says on the bible.
The scriptures themselves were written by humans. What God actually wants is, literally, anyone's guess (or point of view).
The main reason I wouldn't have gone through IVF is that I didn't want a baby so badly that I was prepared to go through the procedures, hormone manipulation, etc, even with careful embryo management.
I understand it's different for all, and I was certainly over the moon when it did happen.
If it helps at all, my ds is a single child. He's ok. Single children can be happy and not spoilt at all.
Children with siblings can be miserable and end up not getting along with their siblings at all.
As dogma goes, and while the Church wouldn't be too happy about it, but afaik it wouldn't be a major thing, and if you do want to carry a child, I might consider donated eggs or embryos.
But I would take some time to consider if I wanted a baby so much that I was willing to go through more possible heartache.
Only you can decide what is best for you and your family.