Honey, do you know how often an angry/vindictive/pissy ex tries to pull those cards, men and women alike?
Judges hear this, everyday, day in and day out. "Oh, well she's crazy/has bipolar/uses drugs/does this/does that." It all means squat if they can't PROVE that you do.
Do you have an attorney or are you pro se? If you anticipate ugliness, it's far better to know you're in good legal hands. Beg, borrow, pawn, cut back on things if you don't have the money for one. Contact one of your state's legal aid department, they can give you referrals for a full-service attorney that may be provided at a reduced cost. It will give you peace of mind.