I do t know what to think

So I think I missed my ovulation but not sure. I got all confused I had a LH surge on the 24th but then realized my test line was lighter than my control line and apparently that means no LH surge. So I thought I ovulated when I didn't. Question is I may have ovulated like earlier around day 11 or 12 of my cycle. I took preg test 2 days ago and it was neg. I have been nauseated and having funny symptoms last 3 days. AF supposed to start today has not came yet no symptoms of it. What should I do?