Looking for clarity on a particularly layered situation:

Background: I'm a man navigating a stormy relationship with a woman whose actions strongly hint at narcissistic tendencies. My realization of my own codependency hasn't made things any smoother. Fuelled by the ticking clock and the deep urge to be a dad, we took major leaps — like buying a home together. To add to the mix, she's now pregnant.

Patterns I've Noticed: While she was previously married, our relationship has always been shadowed by her past narratives. An overarching theme? She's invariably the victim — be it in past relationships, with co-workers, or roommates. The tales of her ex-husband feeling besieged by her relentless need to argue and be overly critical have raised red flags.

Present Scenario: Her being off her anxiety and ADHD meds due to the pregnancy has only intensified our discord, casting a gloomy shadow on any hopes of harmonious co-parenting.

The Crux of My Concern: Legal uncertainties are a significant source of my anxiety. As an unwed father, I'm unsure of where I stand legally. Worries about facing child support claims, adversarial co-parenting, or even her potentially moving away with our child haunt me. Reflecting on all of this, I sometimes wonder if being married might have at least provided a clear legal stance regarding my child's custody.

So here's my ask: In scenarios like mine, how might one legally secure rights, especially in the context of being unwed? If anyone has insights or can point me in the right direction, it would mean the world. Thank you.