Ovulation tests

Chelsea

Does anyone else have a very short window of seeing high or positive ovulation tests? I’m not sure if I’m testing wrong or if this is indicating there is something else going on. I got a high positive ovulation test yesterday afternoon and then by evening it was negative. Tested twice today and they are both low. It makes me feel like this is indicating a short LH surge or that I am not ovulating. Any insight or advice?