Shelley--I know, the waiting is HORRIBLE. Plus, everything that I did worried me. Then, I would get a tinge here or there and think that I was losing the embryo. Crazy thoughts, I know, but it's what happens during such times! I totally know about the caffeine and potato chip thing. However, I have lost ~8 pounds from my heaviest since starting to watch my diet more, so that IS a nice little plus--in addition to hopefully having a healthy baby! 
We did a 5 day transfer. That's what they advised. I know, it's a gamble either way. It's so hard to know. At 5 days, the embryos that have made it have a really good chance of implanting, so that's a good argument for a 5 day transfer. Try not to worry about that now--I know, easier said than done, but try to put that out of your head. I'll bet that a 5 day transfer was a really good bet. Who knows--you may have plenty of siblings for your baby(ies)! 
Be sure to let us know how your Beta goes. I will  for your  !
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Me: 41yo, elevated FSH
DH: 44yo, all tests good
ED retrieval Dec. 6--11 eggs retrieved, 8 fertilized!
ET Dec. 11, transferred one "excellent" blast and froze 4 embies
1st Beta Dec. 20--156! 
2nd Beta Dec. 23--274
3rd Beta Dec. 26--556
Jan. 2 u/s gestational sac and yolk sac
Jan. 8 fetal pole and heartbeat 
Jan. 22 u/s, heart rate 170
Feb. 1 u/s looked great, 10wks.0d, heart rate 173
1st OB appt. u/s Feb. 11, 11wks.4d, heart rate 161
Next appt. March 10
 Chloe (7yo standard poodle), Matisse (5yo standard poodle), Barney (16yo DSH cat), Salem (7yo DSH cat)
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