Divorce 101

My marriage is no longer working for the both of us.. been 14 months & it's not getting better but worse.. I just lost my mother a few weeks ago & she was suppose to help me with this. 😪 where do I start with getting a divorce. Been married for 5.4 years. We have a 8 month old son together. I need help!!! Any advice would be great. I posted anonymously because I'm too nervous and simply not ready to talk about this publicly right now!