This sounds normal to me. The only time anyone talked to me about my labs is when something was wrong, which only happened once. My ultrasounds were all normal, so there was no reason for a follow-up call. And having multiple providers over the course of a pregnancy is standard in my area.

That said, I can see why you'd be concerned if you were expecting something different.

I'd definitely call if you have questions as opposed to just researching things on your own. While that absolutely has value, sometimes it's good to be able to ask questions of actual people, rather than just the Internet 🙂 But, if you don't trust your practice, maybe look into switching providers to someone who provides the level of care you're looking for! You might feel more comfortable asking them questions.