If you want to try acupressure on yourself, here are tips from Janet Shaffer, from Duke Integrative Medicine:
For example: To kill nausea, press the inside of your forearm 3-finger widths up from your wrist. That’s the same spot targeted by motion sickness bracelets.
For a headache, pinch the webbed skin between your thumb and index finger.
And for gas or constipation, rub your abdomen in clockwise circles, 150 to 300 times.