About 4 weeks ago I had 3 days of really, really light spotting and had no idea what it was. A week and a half later I took a pregnancy test and it was positive. So I figured that could have been ovulation spotting. Then I took another test and it was negative, another and it was positive, then another negative. I went in for a beta which was very negative. Midwife said although they are rare, I got a false positive and it was a defective batch of tests. Two days after the beta I had some strange cramping and took an OPK which turned up very positive. So yesterday I tested and it was positive. This morning I took another, also very darkly positive. So I had DH go out and get 'better' tests and those were positive too!