I have been to an outdoor festival, only went to 3 nights out of 4.. and mostly hung around the food area, away from the stages... but last night (final night) everybody crowded to watch Prodigy (who were so loud) and I couldn't really move! I thought I'd just brave it out, obviously wearing earplugs, and stood towards the back, but the bass was so loud! I don't know how others managed without plugs! Anyway, it's the next day and my ears are so sensitive to all sounds and even when there are no sounds they feel really weird like rumbling? I don't know, but I'm so scared I've done more damage. And really angry with myself, I've been so cautious for so long and thought I'd be brave and go with friends to this festival and boom! Feeling the regret now! Anybody had this after a loud concert/festival and does it ease off?