Miscarriage

I started bleeding light at 10 weeks and went in to the Doctor office and saw my baby on ultrasound passed away with no heartbeat . My husband and I were so excited - I just never thought this could happen after the apts we had and them saying baby looks good and hearing strong heartbeat. I had a d&c and found out yesterday from lab results that it looks like baby passed away more at 8 weeks shortly after our ultrasound when everything looked great. The doctor told me to wait one cycle before we start trying and if normal we could start trying again. Well it was normal and we have started again my fertile week begins on the 14th of this month. Now I find my self having anxiety about getting pregnant  and not knowing if this will happen again all the unknown freaks me out. Does anyone have any advice to help the worry go away? My doctors tell me Everything looks good and this is not likely to happen again it is just hard to believe them. They told me if I have anxiety it will delay the process but it is so hard not too and we want it so bad.