10 days is a lil short. But it's not odd for LP's to vary by a few days. my vary from 12-15 days, just depends on when I O. Oddly enough, the earlier I O the longer my LP and vice versa, the later I O the shorter my LP. Try taking some b6, I've heard that will lengthen your LP by a couple of days. Good Luck!
Sorry the witch showed