charting help

Can anyone tell me what I'm looking at? I know that my first half of the chart is missing alot of information but life was crazy and I wasn't really sleeping or waking up at consistent times and was out of town. so I finally got a routine and I know for sure I ovulated the day before I started charting again. my question is what is going on with the second half? is it normal to have such big dips and then immediate rises in temp on 6dpo and 8 dpo? this is my first month charting