Luteal Phase Defect?

Hi ladies, I have been charting, OPKing and cbfm as well this month. I had postive opk's yesterday and the day before, Peak on cbfm yesterday and today, but although my temp has risen over the last couple of days it's not by much. I'm on CD17 of a 28 day cycle and am worried that if I am ovulating then it's today and I will only have an 11 day LP does anyone have any experience of this?

Sorry if it seems complicated, I'm really worried.
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