Miserable
Wretched, Pathetic
な adjective
If you face a lot of disasters in your life you're going to be really miserable. It's a shame, but it's hard to be anything but wretched and pathetic when your life is full of disastrous stuff.
惨め describes someone or something as miserable, usually emphasizing sadness or failure in emotional or social situations. When you describe yourself as 惨め, it expresses a strong sense of helplessness and humiliation.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You haven't learned this reading yet so here's a mnemonic to help you:
You'll be really miserable if you find out you're going to have a really 短い (みじ) life.
そんなことを言われて、人がどれだけ惨めな気持ちになるのか分かる？
You say something like that, but do you understand how miserable people feel?