So my last cycle I miscarried at 4.5 weeks, Which was october 21st. I counted that date as my LMP, but maybe I was totally wrong? I got a light positive on November 16th on an FRER,but didn't start getting positive digitals until 2 weeks later. A week after my first positive I got a blood test which was negative with my HCG levels less than 5. How in the world did I get a positive FRER and then a negative blood test?Then a on friday December 5th, I got another blood test and my levels were at 838. The nurse said that would make me around 4-5 weeks pregnant. I am now wondering if I am going to have a miscarriage, and am really worried. Either somehow I ovulated almost 2 weeks later than I thought I did, or I am in the right timeline but I will miscarry? I have cramps on and off, but no bleeding,and the cramps are more dull. Has anyone had anything similar to this experience? Sorry if any of this is confusing!