I can't believe pregnant employee pushed to resign is even legal

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Illustrative scenario prepared by my practice.
For informational purposes only. This is not legal advice. Laws vary by jurisdiction. Consult a qualified attorney for advice specific to your situation.
Hypothetical question

Has anyone dealt with something like this in Texas? I'm not sure what my options are.

pregnant employee pushed to resign. I've been dealing with this for about 5 weeks now and the situation isn't improving.

I have worked at this company for 2 years. My position is exempt and I do not have a written employment agreement beyond the standard offer letter.

Am I overthinking this or is this a real legal issue worth pursuing?

Illustrative response

NAL, but from what I've read, you should document everything. Of course the details matter a lot here.