Today's my birthday & as a gift to myself, I am leaving

I (35f) have been married to my husband (32m) for going on 4 years now and it has been the longest 4 years of my life.

In this last year alone I discovered he has bipolar, realized the extent of his drinking problem, discovered a child he has abroad from a previous relationship whom he's now abandoned and I have also just realized how deep of a hole I've really been in.

I've been hesitant to leave as I'm a stay at home wife and haven't been able to find a job yet. Everyone I know is at least 2000 miles away and we have two small children.

I don't really have a plan other than maybe do gig work in the meantime and speak to a lawyer and see what my options are. But, regardless... I refuse to do this for another day let alone another year.

He hasn't spoken to me in 2 days and I have yet to know what I've done wrong but, at least I don't have him around to ruin my day. I've made plans with people I met recently at a work event of his for dinner tonight and I'm trying to keep my spirits up in the meantime but it's all just so depressing.

I'm doing my best. I'm looking forward to what's to come and I know it'll at least get better from here.