Feeling stressed

Jodie
Hi all! 
So I am 7.5 weeks pregnant and am due to have my first scan next week (yay). 
Currently, my fertility clinic calls me weekly to let me know if my HCG and Progesterone / Estradoil levels are looking good. I have the same nurse, and each time she says 'levels are going up', we will see if all ok at the scan next week', in a way that I feel is 'unsupportive' when I say I am positive all will be ok, she says 'I hope so' in the same voice. 
Am I looking into this too much? Am I being stressed for no reason? I 100% know that there is the potenital that come next week there will be no heart beat, I think I just expected a little more support from them :(
Sorry for the essay just wanting some positive reinforcement!