Ugh so frustrated!!!

So I'm finally divorced! A process that's taken over a year to get finalized. My ex and I have two kids together. So unfortunately yes I do still have to talk to him. My SO still talks to his ex. To figure out divorce stuff and things like that. He's also been paying her cell bill cuz it's on his account. Apparently she just hasn't had the money to pay anything on her cell bill in over a year. They have no kids together. But she just had a baby with her current boyfriend. She's sending pics of her baby to my fiancé! Also memes and jokes and such. :/ starting to piss me off. If I could I would never speak to my ex again!!!! Am I over reacting??? I hate being preggo and dealing with all this at the same time. Can't I just enjoy my pregnancy? 😭