When did this symptom surface? How long is the duration? How is the intensity of pain, 10 being the highest?
How is your urine color? Do you feel bloated at times?
Lie down flat on your back, and have your roommate gently press a hand on your right side and abruptly take it off...if while pressed, the pain is deep down in THAT section where your appendix is, go to the ER if the pain is unbearable, or if you have to wait longer for a doctor's appointment.
Understand that if it is appendicitis, your appendix might rupture anytime. So, please take note of all your symptoms and don't delay from seeking medical help.