Hello! Today I noticed when I pushed on the brake pedal, it would sometimes go down farther than it should. And while I held my foot on the brake, it would start to go down even farther....like it was loosing pressure. The brakes are fairly new, and they do still stop me. But does anybody know what might cause this? The master cylinder?

I don't know much about brakes, so any advice would be appreciated.

Thanks!

Oh....it's a '95 Accord LX.