I had my miscarrage on May 23rd. It's been 13 days and I have started to have cramps now. I only bled for a day and my levels were at 5 on the 27th (8)days ago. I tested negative on my opk twice today. and I started opks a few days after my miscarrage. I had faint lines a few days after miscarrage but they have dissapered now. Is it remotely possible to have conceived 4