Unexpected Ultrasound

Laura
Started having some spotting today (11 weeks 4 days) and had to go in to the Doctors for an ultrasound. Luckily everything was just fine with my little peanut (heartbeat was 159)!! After 2 miscarriages I am so paranoid that this pregnancy will fail too. I will be 12 weeks on Friday... When is it safe to relax and tell our families?