Septoplasty questions regarding picking, swelling and post op

Hello So its been 3 months since my septo/rhino my nose has swelled down although my question is in the past month ive been slighty picking on the outside of my nostrils cause they get itchy i dont pick it all the way just on the outer parts will that affect procedure just wondering cause have heard of perforation which Again i dont pick ar the septum at all? Also when i rinse my mouth it hurts under my nose because of the water pressure on the nose is that normal ?? Please excuse my english

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