Baby phlegm

Myka • 23 with a 3 y/o girl 💜

My daughter always sounds nasty when she breathes. She sounds backed up really bad in her throat and nose, even if I suck out her boogies. She’s had the sound in her throat since she was a couple weeks old, she’s now 2 months old. I don’t know how to make it go away. It’s 90+° here and we keep the AC & fans on all day. Could that be the cause???? Is it something I should make a drs appt for? Or how do you recommend I try and get rid of it?