Wow, Jen. That must have been a shock, especially while breastfeeding! I am now around 10 days late and still testing negative. I called my doc on Friday to see if they had a more sensitive test and they only do a blood test at the cost of over $100! The nurse was a real bitch and basically said that OTC tests are rarely wrong. I decided to wait another week (if I can do it) and then go ahead and have the test if the OTC test still reads negative. I have probably already spent close to that much money with the amount of OTC tests purchased. I think I am pregnant based on how I feel but I want to be sure. If not, then something else is wrong so I guess it would be good to go ahead and figure out the heck is going on.