Ainara,
You aren't alone. I feel similarly, although I think the tww was a good bit worse than the stage I am in now. Yesterday out of the blue I thought to myself, what if I am not pregnant right now? and then of course I realized that since I wasn't bleeding I still was pregnant so then I thought, "what if everything isn't developing normally?"

I think I will feel better after I see the heart beat.

__________________
DH 37, Me 35
DD 17, DS 14, DD 12

Tubal reversal Jan 2006
HCG Sept 2007 shows both tubes blocked
IVF #1 November 2007 BFN
IVF #2 April 2008 BFP! Twins!