Please respond if you use OPKs OR Progesterone!

[Rozy321]

Hi!

I am on cycle day 17 (of a usually 26 day cycle) and yesterday I got a positive OPK.  I will be using progesterone to lengthen my luteal phase and I am supposed to begin taking it 1-2 days after ovulation.  

If  got a positive OPK on CD16, what day should I begin taking progesterone?  I was thinking CD 19 to be safe.  

Thanks

[Amanda999]

You should take it on CD18 because it says 1-2 days so you don't really want to wait longer.

[Momo1409]

If it said 1-2 days then tomorrow would be the right day IMO. But I've only jst started a OPT! I'm on CD13 and still no +