I'm not sure why, but since the last half of last year, I'm more sensitive to constant loud noises, and very crowded spaces.
Ok I've never liked large crowds, but today it took me a lot of deep breathing today to prevent me from panicking, and that's rather new.
As for loud noise, it tends to be heavy traffic, or trains passing by which forces me to either put fingers in my ears, or put in my ear plugs. I'm usually ok if I have my headphones on.