Oh Bei Bei, I'm sorry you have to go through this!! Sometimes ignorance is bliss..we had the ol "hcg didnt quite double" yada yada.. we also had the IVF nurse ask us after our six week scan"did the sonographer happen to mention what the heartbeat was?" NOOOOOO I went into a total panic, DH ended up ringing the nurse wanting answers..she then got onto the sonographer and although he hadn't noted (which he should have) the exact rate he promised that it was fine. He has been doing this job for 30 years and he reckons you just know by looking and listening. I would think for 5 beats it is neither here nor there? I know how crap this sort of feeling can be, just wanting to relax and enjoy. Stay positive xx