Okay, so i still need advice and still freaking out!!?

i'll be 10 weeks pregnant on friday and i'm still freaking out that i will miscarry! i told my OB this and he just doesn't seem to care and i feel like i'm not getting the attention i deserve.. seriously why can't he just give me a sonogram so i can see if my babys heart is still beating, like i'm freaking out!! i had two previous miscarriages before and it's hard for to get excited about this pregnancy due to the fact i can lose everything again.. my first miscarriage was sept 18 2008 i was 11 weeks and 1 day, the second was sept 5 of 2009 and was 5 weeks and 4 days!! AND another fact is on sept 18 of 2010 i'll be 11 weeks 1 day just like my first pregnancy so i'm TERRIFIED!! i saw the heart beating at 6w 6d an it was @ 132/minute.. is it true that risk of miscarriage goes down after heart beat is seen?? ughh, i hate stressing over this!! I NEED ADVICE!