Would it be insensitive to announce our pregnancy while my SO’s sister is going through a bad breakup (6 years together)?

I’m 10 weeks along and we were planning to announce my pregnancy next week after my next appointment.

Last week my SO’s sister announced that her and her boyfriend of 6 years are splitting up. It’s all very messy, they’ve been living together almost since the beginning, have two pet they adopted together etc. So this breakup includes a lot of splitting up of possessions and figuring out who’s keeping the apartment. We all assumed they’d be the first to get married honestly. She hasn’t told us why they’re breaking up but she’s obviously taking it really hard.

Is it insensitive to announce while she’s going through such a hard time? My SO thinks it’s fine but I tend to be one to read a lot into this sort of thing.