Help please ........

Yuli💖 • Life is full of happiness be strong & have faith 💕🎈

I just had to break up with my other half today, and am obviously feeling extremely upset. Just wanted to ask, has anyone else experienced feeling physically sick because they're sad? I have only eaten 826 calories today, and have been feeling sick since earlier, and every time I eat, I feel even more sick. This is a normal reaction, right?