Can my Whatsapp calls and messages be tracked and recorded by my mobile network carrier? First of all sorry if this is the wrong section cuz I don't know where to post this question :/

I have been using Whatsapp for a while now and I'm wondering if it ever possible for my mobile network carrier to know who am I contacting on Whatsapp and record my call and text?
Nothing is utterly IMpossible, but it's certainly improbable. They'd have to carefully monitor every bit of your network traffic, and as WhatsApp encrypts all of their traffic, your carrier would then have to break that encryption which is no small task.

The alternative is for your carrier to have installed some sort of monitoring software on your phone pre-purchase to track all your actions before they even reach WhatsApp. If they're a large provider, we'd all know if they were doing this by now, as the class action suits would be flying. People take their security very seriously and regularly tear apart what's going on inside their phones to ensure they're not being spied on.

So for all practical purposes, no, your carrier doesn't know who you're contacting or what you're doing in WhatsApp. The most they likely know is THAT you're using WhatsApp. No need to worry.