Hi. I am on day 12 dpo today and last night I saw some spotting - nothing this morning - yet, but my I am having back pain and it feels as if I am going to have AF. My BB's are sensitive but not very. I did a pregnancy test this morning - not positive. I used clomid and injections this month. Do you think it is AF or spotting? Should I ask my dr for pregnancy test or should I wait longer? This waiting is driving me crazy - this forum is helping a lot.