Thoughts?

I've been taking these tests for about 6 days. I'm at 12/13 dpo today. Yesterday I had a little bit of mucas blood looking stuff in toilet and them wiped had a small amount of pink tinged mucas. Thought ok heres AF. Woke up this morning and there's nothing. I did wake up with a headache and feeling just blah and off. Thought what the heck and tested again. Didn't test with 1st fmu this was about the 3rd and after drinking my coffee and some soda for the headache. Could this be the start of something? None of the other tests taken have had anything. Not even an evap line later.