Heartbroken

After suffering with endometriosis for years, I thought it would be very hard to get pregnant. After only trying for 5 months, my husband and I were over the moon that we were going to be parents. I was so exited but nervous for my first 12 week scan. I feel like I knew in my gut that something was not quite right. All of my pregnancy symptoms had calmed but all the apps said that this was normal. I was so nervous but had no idea why. We had our scan and were told that there was no heartbeat and that our baby only measured 8weeks. I only had a few small cramps but thought it was the endometriosis on my womb stretching. I have had no blood, no pain. We are absolutely heartbroken. I can't stop crying and feel so empty. I have to go back in a week to have another scan. It dose not feel real. I keep blaming myself. I know there are so many women going through this. But I feel so alone. I know this is common but I feel lost.