Gaining weight after miscarriage?

Ashley
Hello,
I had a missed miscarriage Jan 4. Had a d&c on Jan 8th. I hadn't gained any weight during my pregnancy...but during this month after my miscarriage, I gained 5 lbs!!!!!!! Is this normal?? Has anyone experienced this?? Why would I gain so much!? I admit, I was feeling down and eating whatever I wanted but I don't think my eating habits have changed that much to gain 5 lbs in one month... Is this hormones???