Your ovulation kit tested positive for an lh surge yesterday morning that evening you decided to take another one make sure but then the test was negative did do it wrong?

No, you did not do it wrong. It is possible to get a positive ovulation test in the morning and a negative one in the evening. This is because the LH surge that triggers ovulation typically lasts for only 24-36 hours and then declines quickly. As a result, an ovulation test may be positive one day and negative the next, even if ovulation has occurred. If you are trying to conceive, it is important to have intercourse on the day of your LH surge or the day after it to increase your chances of getting pregnant.