Can blocked mucus drainage be due to swelling of internal passages? 9 months post op

Whenever I cry or I’m sick my left nostril gets so blocked up with mucus, it doesnt flow like it used to before it just stays clogged and concentrated near my septum . I’m confused on whether or not this is normal or is this due to swelling from internal nasal passages that’s making it this way? Im 9 months post op and my left nostril is so so swollen it looks like how it does from 2 months post op at best.