Wrong question?

Sandra
Hey Glowers, 
I really hope you can help me with this. One of my friends is pregnant. She is overdue since the weekend and I asked her in a WhatsApp " How offen do you have to go the gynecologist?  Every week or every other week?"
Her answer was"I will keep the answer to myself"
Is this a too personal question? Was ist wrong that I asked this I just wanted to write some smalltalk...
Thank you gor your answers ladies😘