How to say the sentence "stomachache"?

1, I just felt a rush in my stomach and his forehead was cold and sweaty.

It is too difficult for me to wake up with a stomachache. I am often ill, so that I begin to wonder if I have stomach cancer.

3, the pain of the heart, solved with wine, but more painful, want to use stomach pain to solve heartache, can not, heartache has no solution, want to solve heartache, and cherish.