im not sure

Ricki

calculate from my last period I should be about 5 weeks and 3 days or so and I got a vaginal ultrasound today and they didn't see a sac and my hcg levels were 327 is that normal? I'm very scared because a few months ago I had a miscarriage and I'm worried I might have another one. what are the odds of me having a second miscarriage in a row?