Etiquette Question: How would you say this?

So inevitably while pregnant people give you advice. I’ve learned to deal with that. However I draw the line when people want to tell me horror stories of their pregnancy or a friends pregnancy. Or when they tell me specifically to change doctors/hospitals and keep persisting.

Today a woman who I work with. Essentially I work in low-income housing and she is a tenant I see daily. She told me that I needed to switch doctors and “I want you to go see my midwife”. Then she proceeded to tell me a horror story of someone who went to the same facility I’m going to. When it is friends and family I don’t have a problem being blunt. But when it is a work scenario I am trying to figure out how to appropriately tell someone I don’t want to hear it. This is keeping in mind that it is a specific crowd of people I work with. Many of them are very sensitive to negativity and are living more in survival mode so that limits ways in which I can speak with them.

Any suggestions?