Confusing cycle/ HELP!

Hey ladies,

Currently I am 17 dpo and definitely know I am not pregnant at this point. I had two BFN’s one on 15 dpo and another one today on 17 dpo. bbt dropped two days ago so I knew period was coming. This morning my bbt went up by .02, my cervix is pretty high but I have had spotting. I have never had a 32 day cycle, nor have I ever had spotting before my period (Spotting as in one dot of blood on my tampon) and I’m almost 35. Has this happened to anyone before?