I have not been heard in Skype and Discord for a short time, but everything fits in e.g. Fortnite VoiceChat. Discord also realizes that I'm talking because the green circle is there. Now I don't know what to do next, but I think it's Windows (10).
Always push everything to win10 xD that's just a poor program
So what you can try is to restart discord (ALT + F4 / in the task bar on exit and NOT on X at discord) and maybe change to standard-mic and then select it again.
Audio devices reset? Restart Discord, update the microphone driver and reconnect the device.