Anovulatory cycles ever since the miscarriage?

I’m on my second cycle since the miscarriage. I burst into tears this morning when I saw my temperature still hasn’t gone up since my lh surge. I’m just so confused why this is happening. These two cycles have both been ridiculously long with hardly noticeable fertile signs. I had regular cycles before the miscarriage and we got pregnant on the first try. So why is my body betraying me? Has this miscarriage ruined my body? I’m so sad, I wanted to be pregnant again for Christmas but now I’m scared I’m not going to be able to get pregnant again. I know so many people who had miscarriages at the same time as me and they’re already freaking pregnant again!