progesterone levels from the corpus luteum should be enough to sustain you through til the end of your LP (so when you'd get your positive test) - using pessaries before then isn't going to help, and will probably do your head in as it elevates your p4 levels to the point that, even if conception hasnt' occured, af will be delayed. given that you have conceived and gotten past the point where a pg can be detected, you don't need them earlier than that.

i'm assuming that you tested positive on or around 14dpo - if that's the case, get straight to doc and have bt's done at that point, and get started after that.


fwiw - pessaries are damn expensive, so you don't wnat to be using them if conception hasn't occured! it's a lot of money to use on a maybe - btdt with ivf!