lulu. it is stressful waiting for the 12 week scan. but hcg levels are just one indicator or downs. and even when combined with the other factors, still only provide a risk level & isn't diagnostic. i know it's easy to say, but worrying about it or googling won't change anything other than making you more stressed. i was convinced that i had an ectopic pregnancy with DS because i had a pain in a should blade & dr google told me that it was a sign of an ectopic pregnancy. dr google just makes you crazy with worry. hope the time passes quickly for you