Not only that. You no longer exist. As you were at birth, that is. And after some amount of time every so often in your life, you will continue to be unrecognizable to the version of you from x years in the past. Your cells die off and new cells are created until you are literally composed of different matter than you once were. The closest thing to a constant thing tying you together would be the electrical signals in your brain. Memories. Like computer code sent from one PC to another. Also the DNA determining how your body is built.
It’s the classic Ship of Thesseus problem. If you replace a ship’s parts one piece at a time over many years until the old parts of the ship no longer remain, is it still the same ship? And in the same way, are you still the same you? Maybe our lives are full of many different people tied together only by our thoughts, memories, and genetic code.