Started azithromycin on 5/31. nose still gets stuffy & ear still has fluid in it. is this normal?

Depends: Sinusitis may respond to Azithromycin by clearing the bacterial pathogens, but may not affect the congestion which requires a decongestant, possibly nasal saline rinses with neti-pot, steroid nasal spray, and so on. If this keeps up, see ENT doctor. Do not let this become chronic, as that is very difficult to resolve satisfactorily.

Blocked eustachian : A blocked eustachian tube can cause these symptoms and may not clear with antibiotics, if there is not an active infection. Allergies can cause these symptoms and may be helped by over the counter antihistamines (claritin, zyrtec (cetirizine)...) if symptoms persist you ought to see an ENT specialist.

Abx: Ask your doctor to change your antibiotic. Low sensitivity of bacteria to azitromycin, if you have correct diagnoses.

It depends: This depends on the cause of your stuffy nose. Congestion can be due to viral or bacterial illness as well as allergies. Or your anatomy might prevent drainage. Any of the above would benefit from using nasal saline (either a spray or neti pot) to help rinse out your sinuses. Fluid from infection can persist for weeks. If you are not improving you may want to talk to your doctor.