I Accidently Took 2 Of Naproxen Of 500mg And My

i accidently took 2 of naproxen of 500mg and my stomach is painful more than ever, I thought, there were the same ones ive use, naproxen 250mg. I was in rush that time, I just thought, there were the same ones. that was this morning, now, I wont continue taking it until your reply.