To undo, or not to undo?

Knitting cables involves a lot a counting - counting stitches, counting rows - and counting is noy my strongest suit - so I lost count and ended up with weirdly elongated cables.  Well, at least they are symmetrical.  I don't know if I should continue on, and just pretend that the deviation from the pattern was intentional, or if I should unravel to fix my mistake...  what to do, what to do?