HELP! is my chart showing a Triphasic pattern??

Siobhan
Hello, I'm currently 13dpo and I had a large temp spike this morning but sadly got a BFN! 😔 could I still be pregnant? And is my chart showing a Triphasic pattern?? 
FYI- the previous temp spike on 8dpo was taken 2 hours later than normal after a lie in and broken morning sleep so I think that's why it could have been elevated. 
This is my first month on clomid after irregular cycles so I don't have a usual cycle length as not really been ovulating! 
Currently 18 months TTC. Praying this is our time!! 🙏🏻🙏🏻 
Appreciate and thoughts on my chart!! Thanks xx