It worked!
I had my beta this morning (12dp3dt) and it was 312! My progesterone is 117!
I am so freaking happy and excited right now - although guarded at the same time. As too many of us who have had losses know, it's hard to get comfortable without the fear of it being yanked away.
I go back on Wednesday for my 2nd beta. I will take all the T&P and doubling vibes you can spare!