Suggest Remedy For Problems In Pregnancy

I was pregnant in september last year and in october I was diagnosed with a missed miscarriage in 8th week and said that there is no foetal development and no heartbeat. I had gone for D&C. And again in march Iam pregnant but started spotting in 7th week and again I was diagnosed with a missed miscarraige. This time I dint wanted to go for D&C n waiting for natural miscarriage n its not happening. this is my 10th week. But iam still spotting dark brown discharge. Should i go for D&C now? or should I wait? I have not been suggested any medications. Iam 26yrs old. Why there is no foetal development. Why is it happening often? my harmone levels seems to be good. I dont take alcohol. What are the tests should i undergo? Which doctor should I consult? pls advice...