BBT help!

Kristen
So I was wondering if any of you ladies have had a chart like this and got a BFP. My cover line is 97.99F. My temps, like they should, elevated after ovulation. Then, at 8dpo, it dipped about .34 which is below my cover line. At 9dpo, it rose significantly. Today, at 11dpo, it spiked to the highest my temp has ever been. 
​  Could that dip be an implantation dip? Especially since it's followed by a severe spike, and then a second spike? My AF is due in 2 days, but I'm hoping this could mean a BFP for me. Has anyone had a similar chart and gotten a BFP? 
This is my first month charting my bbt. (The 17th is when I ovulated)