I'm 11 days late on my cycle. About a week before AF was due, I started getting some cramps. More so on the painful side and in my right rib. Then it switched to under my boobs and now I'm the lower region. I had nausea but nothing came up and massive headaches. I also spotted for two days a week before AF was due. I've taken test every other day and today the test had a very faint pos line and it was only the outside of the line and only the top half. Is this an error in the product? I'm going to post a picture but it's SUPER hard to see and this was the best pic I could get because my hands shake a lot.