I'm going through a divorce now and it really sucks. When I was in the early stages of separation, it really aggravated my bipolar symptoms and led to me being hospitalized.

Did your ex provide you with a reason? Has she stated if she will file? Most states do have a preference towards 50/50 custody. I'd start to lawyer up. Also- goes without saying but I would get a new bank account and consult with an attorney before providing financial support to your ex.

Keep us posted! You may want to set up an appointment with your pdoc and see if adjustments can be made your medicine.

Keep us updated!