Confusion with ovulation! Help?


According to glow I was ovulating the exact time that I've always confirmed by testing before I discovered the app. And I still confirmed just to make sure, well, the confusion is that I got some of the same symptoms and cm that I normally do during ovulation just 2 days ago. I am currently 8 dpo my previous ovulation.

So I took another test 2 days ago and there was no surge line, took another yesterday out of curiosity and the line was darker but no surge... I tested today and it's even darker but still a bit lighter than the control line.... does this mean anything? Or am I supposedly going to ovulate again before AF? Is it even possible to ovulate more than once per cycle? AF due next Saturday....