Hi ladies, this is my first time here and I have many questions and hoping to share the little i know about this journey. So like many of us , I have been charting and reading reading...lol..and I found a second spike on my bbt chart about 6 days DPO. (I'm now 23 dpo) Can anyone enlighten me as to the difference between a secondary lh surge or a triphasic chart?? Is there a difference? Thnks in advance.