Hey mama, For the benefit of mamas who are reading, hormonal imbalances can cause the swelling of your nasal passages and the production of more mucous. This article suggests a saline rinse or irrigation: https://www.hellomotherhood.com/article/541916-thick-mucus-when-pregnant/ Other articles have suggested not consuming too much creamy stuff so that the mucous doesn’t get thick and irritating - it also prevents more mucous from being produced. Hope this helps mama.
Fatihah Kamarudin