Though my statement related to state law, I feel as though I stand at least partially corrected. That said...apparently pregnancy by itself is not a disability. (I know far less about federal employment law than topics like subatomic physics) All this suggests consultation with an attorney is a good idea.
The PWFA requires a covered employer to provide a reasonable accommodation to a worker’s known limitation related to pregnancy, childbirth, or related medical conditions, unless the accommodation will cause the employer an undue hardship.
The third law is the Americans with Disabilities Act, which is called the “ADA.” The ADA prohibits discrimination against an applicant or employee based on a disability, including a disability related to a pregnancy such as diabetes that develops during pregnancy. While pregnancy itself is not a disability under the ADA