What are you talking about, my friend, newbie? You do realize profwife and I have only the tiniest lead on you, right? Been here from the start not closing this thread anytime soon, at least not until us, you, and Hopeful all take home LOs.
Regarding the progesterone supps, I had brown spotting from them too. I never took the back door approach, just put them a little lower. Hated all the discharge. They are actually more advanced than the PIO injections, developed to make it easier and more convenient for people to supplement. Absorption is comparable between the two, I think the supps have lower systemic side effects. I think I'd have preferred the shots, myself.
And no pressure, test if/when you feel comfortable. I do feel a little like I'm waiting for my own test on your behalf, but I'm strong and can wait!