Conceived during miscarriage but no 1st period

Kailly

I had a miscarriage on August 26th and I had unprotected sex on august 29-30, and I had light cramping over a week ago and I have been moody. I have also been hungry in the morning everyday this week. I’m not a breakfast person. I feel like I am having all the symptoms like last time I got pregnant. I took tests and it came negative. Has this happened to anyone else before?