Anyone been through a divorce while pregnant or maybe after a newborn?

I’m ready to start filing for a divorce from my husband. We already have a 3 year old and another on the way. But this marriage is too toxic and it’s not healthy for me or my unborn child. I’m ready to just separate from him now.

And I’m tired of ppl telling me to stay and work things out... I’ve been putting up with a lot for the past 5 years and I’m just tired... if I stay longer things won’t end well.

So my question is on the divorce process. Any tips on how to get started or first steps? How long does it take to finalize ? Etc.