Please help Im terrified

Woulfe

Ill be 7 weeks tomorrow and having my first ultrasound. My DH and I have been trying for over 2 years now and this is our first success.... I of course am pessimestic and always prepare for the worst but i googled first ultrasounds at 7 weeks and came across a thread about how you can have a miscarriage and not know it because the babies heart can stop beating....Now I'm terrified that I wont hear that amazing sound tomorrow...