Could the medication 'divalproex sodium' or 'topiramate' affect an at home pregnancy test result cuz im 5 days late and it's negative I'm never late?

Trust the test. Home pregnancy tests are very accurate and this medication will not affect the test. They are the same tests used in a doctors office. They can detect a pregnancy 7-10 days after conception. The best time to take one is when you miss your period. If you doubt the result you can repeat it in 1-2 days. If you were pregnant the hormone level would rise enough for detection.