Late in a sit n go - short to medium stacked

Late in a sit and go, your short or medium stacked. You are delt 55 - 88. Do you push?

Ive pushed with this snerio in the last 5 sit n go's ive played, and been called with two over cards, and they have won each time.

The odds should be about 50/50, but it seems like, and ive played 100's of sit and go'o, that 90% of the time the over cards win.

Theoretically with such a large sample size it should be more 50/50, and I just got burned 5 times in a row by this, so I am not really sure whats up. Should I fold a poket pair late when the blinds are almost 1/4 to 1/2 my stack, or should I always push.