8. Feeling Sick to Your Stomach
Nausea may occur if you eat a bad crab cake or if you have stomach flu, but it will not last for long. Therefore, most of the time a person feels nauseous if he is ill or because of pregnancy, but in the absence of the cause, an investigation must be carried out.
According to Reader’s Digest, a blockage can occur when cancer presses on the stomach, making it difficult to retain food and causing nausea. And worse, could happen.
