This seems like it's going to take forever! I had great betas, 291 at 10dp3dt and 644 at 12 dp3dt, but 12 more days 'til the ultrasound?! Listening to my body, thankful for little twinges, hoping for other signs, and lots of praying! I keep trying to think many more people go on to have successful pregnancies than those who don't hear a heartbeat. Staying calm and praying God also believes we're ready for this important step!
March 2011: Off Nuva, cycle back to "normal" for me: No periods since 15 years old.
June 2011:Provera&50 mg Clomid; Progesterone:0.7
July 2011:Provera&100mg Clomid; Progesterone:3.29
Met with RE:No Clomid response, begin injectables Sep
5 mg Letrozole and Ovidrel in the interim month. Cut out running (was a distance-runner), cycling, eliptical. Restricted to weight-training, walking, pilates. Brain MRI normal. Being physically over-stressed is the reason the body stopped producing prog.
Late Sep 2011: Menopur, Ovidrel,& IUI (10.10.11):BFN-Great injectable response: 2 mature, 6 near mature, many smaller; Problem: 9 cysts! Dr: IUI too uncontrolled for number of viable eggs & age. On to IVF! IVF ER 12.6: 37 mature eggs, 27 fertilized, froze all to avoid overstimulation; FET 1.22 (2 Grade 1)=BFN; FET 2.22 (3 Grade 2)=BFP! Beta 10dp3dt=291; 12dp3dt=644; HB 3.26!! 174 bpm: Vanishing twin almost completely absorbed 10wks

Re: 12 more days 'til 1st ultrasound
I've got three more weeks until I get to hear the h/b, and I'm anxious, too. Hang in there! We can do this!