Turn Signal Trouble

Did you get out and visually see that the right marker lamp wasn't flashing? If you hear it clicking,does it click the same speed as the left side? If so,and the right marker lamp is flashing but the inside light isn't,suspect a bulb in the gauge cluster.Also,have you tried your hazzard flashers?

Now if the right side is clicking at a different speed than the left,it's either there is a bad connection in the marker lamp bulb socket or the flasher is either not plugged in all the way or is due for a changing.

Edit - - - - Duh i'm a dumb a$$! Not paying attention,I forgot to notice you said it blinked VERY slowly "At first".