thiscantbeit's TTC after m/c Wish

I don't understand what is wrong.I recently miscarried in december and again in march. I have had 2 healthy children before this,so I just dont understand why this is happening.I am waiting for my body to finish healing from the miscarriages and my husband and I are going to keep trying,although I am so scared at this point that if I get pregnant I will lose it again.I just pray that the Lord has a plan for our family to have another child, I just cant come to terms with this being it for us!