I'm not going to ask what happened but are you ok?
I'd say not pregnant.
If your ovulation happened earlier that month already chances are extremely slim. If it was normal period, few days heavier bleeding not spotting - chances extremely slim. Also normally women with very short luteal phases, less than 10 days have got difficulties with getting pregnant so 7 days luteal phase would be really short so again, chances extremely slim.
Ovulation tests are not very accurate, they register LH surge but won't tell you when you're actually ovulating and it can happen that during some cycles no egg is released and there is nothing to worry about.