Jane, I am the same way. I have heard some extremely loud fireworks. What in the h*ll is going on? I've been in combat zones and this stuff sends me to a bad place. You are right, I swear it feels like a mortar or artillary round landed just outside my d*mn window. And I live out in the country, for the peace and quite.
There are times when it feels like some kind of war has come to me. I've got people hunting on my property firing rounds less than 50 yards from me while I am gardening. I got a clown behind me using his property closest to me as a firing range. He usually fires high caliber rounds, 40, 44 and 45. Loud as all fricken get out. My dogs run for cover when the shooting starts. I had an old senial gizzer Korean War Vet firing rounds of some sort, timing it to just when I went to check my mail at the end of my driveway. I swear there are times when my immediate neighborhood is more dangerous than Syria. Shalom.