I was in a bad car accident 4 months ago, I ruptured my spleen, broke C3, C4 & C5 in my neck, I broke 2 ribs, suffered a concussion. I had to wait several days before they could perform surgery on my neck due to damaging the main artery in my neck. However I have not had a period since the accident and i am wondering if this is normal? I am not pregnant, but I did have a miscarriage as a result of the accident.