Ah! What is this?

So I took this at work about a week ago and thought I saw the faintest of positives. 
Then took this one two mornings ago. I don't see anything on tbis one. 
I had very faint spotting. It was light pink and I've felt crampy the past two weeks. Spotting was around my fertile time. And i never spot, or cramp with AF. My breasts have been super tender as well but that only started yesterday. CD 40 today.