Hi, I'm Tiffany and I am ttc again!!! I was active on this board when I was ttc my last son and everyone was so great and helpful so now I'm back

I have 2 boys (1 1/2 and 3 1/2). Well, my question is about my chart and when you all think that I might have O'd.
My Ovulation Chart
My peak EWCM was on cd 15 and it was also on the same day that my temp dipped. On cd 16 I had a bit of watery cm and then on cd 17 I had a lot of ewcm in the am, but only once. At the time I was pretty sure it was ewcm, but now I'm wondering if was from bding. You know? Anyhow, thanks for any insight you all have and if you have any questions, ask away.
I look forward to getting to know you all!