Charts advice

Hi ladies I wanted to just get some feedback on my graphs. The first one is from premom and the next one is on FF. I have a few questions:

1) when do you think ovulation occurred? I believe it happened on the 21st but from looking at both charts it may have been the 24th. But I go with the 21st because of my positive opk testing I did. (If anybody wants to see just ask and I will put in comments). On the 24th I didn’t have a positive opk at all.

2) as you all notice for the past four days my temperature has stayed consistent. Is that a good sign? As of today I’m 9dpo.

3) I was cramping on Friday really faint but on Saturday, Sunday and Monday I had period like cramps but not as bad and I haven’t been cramping since. I have other things but I’m not looking to deep into it I’m not trying to get my hopes up and it turns out a different way.