I went through embryo transfer 6 times, so I can speak from my own experience. Once I felt symptoms starting from the 8th day post transfer. By day 10, my breasts were so tender that I could not sleep on my stomach. I don't know if it was really hormones from the pregnancy, because I was also taking daily progesterone shots. I did turn out to be pregnant & my first beta (day 19 - an old procedure) was 2500. My daughter (born from that cycle) will be 13 next month.
The next time that I was pregnant by IVF (frozen embryo transfer), I didn't feel anything until around day 11 & then it was just a general feeling that something was different, but the feeling kept getting stronger, despite the fact that I started bleeding. It was just before Yom Kippur, 11 years ago. My twins born from that pregnancy are a little over 10.
I had a 3rd IVF pregnancy & despite the beta being low, I suspected that I was pregnant by the time I took the test.
I have heard of many cases in which women have no symptoms at all... Feel free to read something I wrote about the two week wait & of course, good luck!
Rachel
http://www.fertilitystories.com