Another miscarriage

Several months ago I had back to back very early miscarriages (chemical pregnancies) and after many many tests we discovered that I had a partial uterine septum. I had the surgery for it and prayed that it worked. Last month we found out that I was pregnant again. We held back our excitement given what we had gone through. All we could do was pray that this one stuck. Then last week we went in for our first ultrasound and there it was, our baby, heartbeat and all. We were over the moon with excitement, the surgery worked and we were going to have our rainbow baby. Then yesterday I started having the most horrible cramps and passed a large clot. Today the doctor confirmed what we already knew, I had miscarried again, this time at 7 weeks. Our hearts are so broken and hope taken from us again.