Updating TN while pregnant?

The company that I originally got my visa on and have been working under for the last year and a half, has been acquired by larger company that provides the same services. Everything about my role will remain the same.
I understand that I need to update my visa before the change takes place but I am 6 months pregnant and fear that I might get denied because I’m pregnant. Am I overreacting? Can I get denied for being pregnant?
I understand your TN is still valid, regardless of the name change. If you want, you can ask your firm to provide a letter for you stating that you still work for Company A, which was acquired Company B, and took over all responsibilities of Company A (including your TN visa obligation).
Maybe others can comment.