Anxiety of miscarriage - 9 weeks

Emma • England. Married. Age 26. Pregnant with baby number 1, EDD 24/05/2015 xx
So I had my first midwife appointment on Wed, she sent me for an early scan Thurs because of my anxiety she's having no pregnancy symptoms. When the sonographer said there is a heartbeat, I cried and cried and cried. However because of my anxiety I am still sooo worried until my 12 week scan. What are the chances of miscarriage after 9 weeks? Is it less likely? Can't stop worrying. I think I just need reassurance xx