If you’re concerned about a short luteal phase, this means your progesterone is low. Look into taking chaste tree (an herbal supplement that stimulates the production of progesterone) and acupuncture. A naturopath will be able to support dosing around the chaste tree.
You may have a short luteal phase or you may have a delayed period. My last cycle i ovulated on CD 25 and today I got my period on CD 37, which is 12 days. It's short-ish for a luteal phase as mine are usually closer to 14 days but long enough that implantation could have occurred.