12dpiui. I have a rule against testing early as I think that negative pregnancy tests are more depressing than a period. If Clomid doesn't lengthen my LP, my period is due tomorrow or Wednesday. Judging from my cramping, which has gotten worse throughout the day, it'll be right on time. But who knows, maybe I'm one of those women who has cramping as a sign of early pregnancy. If the period is missing, I will buy a test on my way home Thursday and test either Thursday night or Friday morning.