My wife does this too (she's of engineering background). It's surprising how well this works even with a quick search. Many times even the doctors have asked her whether she's actually a doctor.
It's also useful for having proper discussions. The doctors will discuss the details they're unsure about, which also helps you in discussing with the next doctor. If one doctor is very sure about one thing, and another isn't, that's a yellow flag.
That could be a yellow flag in either direction - a less knowledgeable person might be overly confident, or the less knowledgeable person might be unsure.
Honestly for gp not sure and consults a source and a database is my preferred option. The publication are going to be more up to date then what’s in your doctors memory banks from med school over a decade ago
Yes, if it's about my health, finance etc, I go check the science. I don't factcheck all opinions I hear, I don't care about the majority of it (actually I try to not even hear it if it's not relevant enough to warrant checking the science).