I was at a park and someone opened a huge firework and it blasted close to my ears. when in silent room i hear this constant sound like weeee but i dont know if its tinnitus or if this sound was there before the incident what does tinnitus sound like?

Tinnitus can have a different sound to individuals. It might be a ringing sound, a swishing sound, or possibly something else. Schedule an appointment with an Audiologist, and be evaluated.

High decibel explosions commonly can adversely affect hearing and constant perception of noise in the ears can follow such an event. Often tinnitus is associated with hearing loss. See an otolaryngologist and obtain an otological-audiometric evaluation.