You are not alone. Your story is very similar to mine. I lost my bub just before 12 weeks as I found out at our scan. After I just wanted to be pregnant again so bad, but my cycle took a while to get back to normal. It took around 4 months for my cycle to get back to what is was prior to the miscarriage and in total it took 7 months before I got my BFP! It was hard to see pregnant women and every month that the test was negative was like a kick in the gut. But a month prior to falling pregnant I had to stop myself focusing so much on getting pregnant and relax a little so we went away on a little holiday and came back and I never got my period!
It will happen it just takes time and when your body is ready again it will be your turn.
I dont know if you are charting your cycle but I found using opks and taking my temps helped alot, I began to understand my body better.

I am so sorry for your loss of your little angle. Take care of yourself.