Help.. ?!

Anna • 31. Married. Mother to DD after TTC 3 years. Have been TTC #2 for over 6 years now.
So I'm due for AF to show up today but so far she hasn't. I took a hpt this morning and it was a bfn. However, my temperature shot up this morning. I'm also cramping. I'm not sure if this is all just me about to get my period or maybe it's too early to test? I was pregnant before (resulted in a miscarriage) and I remember I didn't get a BFP until I was 6-7 wks gone. Wondering if maybe my hcg levels just don't rise as quick as normal. Do I have a chance at all? I'm 14 dpo. Has anyone had to wait this long or longer for a BFP? :/ 
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