Ooh, I totally understand this! You have my utmost sympathy about your dilemma & huge congratulations about your pregnancy!!
Hubby & I had all sorts of fertility problems...miscarriages, operations, drugs, etc for years. We were desperately sad about it all. For much less time, so did our very close friends. All very supportive of each other. Promises to help each other through & not freak out if we were pregnant at different times etc.
At the height of it for us, after a devastating late miscarriage, our friends got pregnant. It killed me to do it & I cried buckets in private, but I plastered a huge smile on my face, wished them well, checked in with her, listened to her endless updates & was generally there for her - all the while trying to cope with constant disappointment myself & IVF appointments. She wasn't particularly sensitive but I was determined to be 'ok' about it all - for her sake & my own mental health.
Then, miraculously, against the odds, I got pregnant again. Too scared to tell anyone for ages, we kept quiet. Horrifyingly, not long after we found out, my friend suffered a late miscarriage. My heart broke for her & I was very supportive.
From the second we told them that we were pregnant again (very sensitively), she cut me dead - refused to talk to me, would cross the street if she saw me, no reply to my messages, etc. It really hurt me but I let it go to begin with, figuring she needed to heal & I knew what pain she'd be in. I sent her a lengthy message telling her how I understood etc & promised from that point on not to even mention it & just carry on as normal. Plenty of other things to talk about etc. However, she just couldn't even face me. She lived close by & went out of her way to avoid me for months.
When our baby was born, she sent no congratulations, no message, no card, nothing. Carried on avoiding me - crossing the street every time she saw me out walking with the pram etc. I just didn't know what to do for the best. I kept reaching out but she blocked everything. I was really sad & upset so I decided to just drop it in the end. It was impacting on my joy & I'd done all I could.
A few years went by (total cut off - like we never knew each other - repeatedly crossing roads & walking out of places if I walked in etc) & she thankfully had a healthy baby, too. Not long after, she messaged me to re-connect & I was really angry!!
It took me a long time to reply & we've still not become proper friends again. She refused to even acknowledge what had happened & I just couldn't get past how awful she'd been.