I Was Taking Apo Naproxen 500 Mg Prescribed By My

i was taking apo naproxen 500 mg prescribed by my doctor for severe paim in my left knee 2 tablets a day of 500 mg I have had it for 4 days now but I am now having pain in my stomach kind of gripping was wondering if I should discontinue this tablets I have 6 more to go for three days