A short row itself is not a decrease, just a way of shaping your garment.
If there is a decrease in the pattern in would be included in the directions (a k2 tog or a stitch slipped over another) otherwise, when you got to the end of your short row, there should be the same number of stitches on your needle (including those you haven't knit) as you started with.
So if the pattern row you are on doesn't specify a decrease, then you will have the same number of stitches in that row after the short row.
Maybe if you included the parts of the pattern that are confusing you someone could help you make sense of it.
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