"pop" noise at random points not in original recording

Lately in various points in my audio I have been getting this audio 'pop' noise - as though making a bubble pop sound effect with your mouth. I am recording via obs using an AT2020USB+ microphone and when I listen to the original recording, I can't seem to hear the same thing. It is subtle. It may be more audible with headphones. 

I have tried clearing cache in case that was causing any strange issues but it had no effect.