I have a short luteal phase, and late ovulation. After having to use clomid and 1.5 years of trying with out third baby, I decided to get more involved. Iv charted temp, cp, cm, and ops for all 4 children (and 3 miscarriages).
The progesterone cream I use only after ovulation to lengthen my luteal phase. I use the kind from earlypregnancytests.com
I did not testy, no. But I know that was a good option for lengthening lp.