Sound moment

I got home from work and was just hanging out upstairs, watching some TV. My mom has been sick for a few days now, and has been at home all this time. Well, today, she took a hot bath to warm her up (she's had the chills). For a while I didn't take notice of anything sounding weird or unusual, as I was watching TV. Eventually though I made my way down the stairs so I could get some food for my dog (the bucket of dog food is kept in the storage room downstairs, it's hidden away). That was when I noticed the sound. I couldn't figure out what the heck that sound was. But it was louder when I got close to my bathroom downstairs, but then it clicked. 'Oohh, is that the bath tub running upstairs?' What do you know, it was! I myself prefer to take baths over showers and bathe quite a bit, but I have never heard the water running from the bathtub faucet as I was always deaf every time (I always take my hearing aid off and leave it on my dresser in my room before even going into the bathroom to take a bath).