Is It Just Me or Is The House Shaking A Lot More When The Train Passes By Lately

We live in a small two bedroom, one bath, very old house situated on a my own itty bitty piece of Texas between the railroad tracks and Hwy 6 in beautiful vibrant Hitchcock. Some time early this year, the railroad laid new track and it seems to me that the trains have been flying up and down the new track a whole lot faster. I grew up in the house next door and even lived in this one until my parents were divorced. These properties were my grandfather's and I remember the passing train and the sight, sounds and shakes as one of my earliest memories.
In 1986 I moved into this house and in 1989, 1990 or so my brother moved in and we shared this house up until I married in December 1991 so I am intimately familiar with the passing train; it's a part of my surroundings as the grass is green and the sky is blue and the rain is wet. I'm so used to it, a passing train won't wake me at night but I can distinctly hear a car stopping in my driveway or the gate latch clinking as someone opens it. Go figure.
My big deal is, I sit in my house or lay on my bed and as the train passes my house seems to shimmy and shake a lot more than what I'm used to. I even went outside to see if there was any other conceivable cause and as I looked at the train flying by it seemed to actually blur a little. I had difficulty focusing on the stenciling on the sides of the train cars. Maybe it's just my vision growing older as I knock on 40 years old? I remember being able to actually focus somewhat clear on the train car stenciling. I remember focusing on the individual train cars but they just seem to blur now. Sure hope the shaking isn't causing any structural damage to my little house. It's the only home I have.
My grandmother used to say that if the trains were carrying a particularly heavy load, the house would shake a lot more than usual. No one else has even mentioned the increased shaking to me in casual conversations, I havn't mentioned it to anyone either. I don't won't to come off as some fruitcake with ultra sensitive sensations or conspiracy theory material or such.
I am knocking on 40 years old this next year and I have noticed changes in my near vision. I notice if I take my glasses off and read my watchface the numbers are more clear. I don't feel any headaches or eye pain or see any floaters or any other significant change, but I probably have been holding my reading material closer as I read. I chalk it up to computer screen eye strain. As I type this I am not wearing glasses and can see the screen quite clear.
Still, normal changes in vision shouldn't make the house shimmy and shake as it does. Do people become more sensitive to movement as we grow older? Just what the hell is going on here! Trains flying down the rairoad tracks at almost light speed, my house shimmying and shaking like two elephants mating in the jungle and my vision starting to go on me. Must be logging off now and get ready for work and such and beside s, my wife and daughters just walked in the door so there goes my peace and quiet. The sooner I get on the road to work, the sooner I'll get a semblence of peace and quiet, maybe even read a book or play some chess.