Triphasic and implantation dip?

We aren't trying to get pregnant now, and the days marked with sex we used a condom at the end, but we would also be excited if it happened. The beginning of the chart is sporadic because I just had my IUD removed, but once ovulation is detected it shows a clear rise, and to me appears to be triphasic and the dates that dip I worked nights so I didn't know if I should count them, but from what I read these are both strong indicators of pregnancy. Has anyone else had a chart like this or want to add some feedback about it? Am I reading into it too much? Thanks!