The best solution is to use another ovulation test again as soon as possible today (though you should wait 4 hours before passing urine again to ensure that the level of fertility hormones in your urine is not diluted). Try to avoid drinking excessive amounts between doing the ovulation tests. Make sure that you follow all the instructions carefully. Itâs best not to wait until the next day to do another test, or you could miss detecting your fertile days. If you have collected a sample to test, then you can use this same sample straight away to do your second test. If you donât detect your LH surge with this second test, then test again tomorrow at the usual time.