Increased mucus after stopping Trelegy

Been having a lot of increased mucus in my throat since I stopped Trelegy and went back on Symbicort. It’s affecting my voice and it’s a little embarrassing - people think I’m sick when I’m not! I never had this much mucus (or any mucus) before starting Trelegy. Anyone have any ideas on what’s going on? Could it be a medication side effect or because Trelegy has a LAMA and Symbicort doesn’t? Am I just now noticing all the mucus in my throat that used to be my baseline but Trelegy made it go away for a bit?

New to asthma so I have no clue what’s symptoms and what’s not.