BP can go up & down depending on what you're doing at that time. I was told to take mine for a week, 3 times a day. I noted it down & gave to GP. Mine is occasionally up a bit, in fact it was up a lot one time, but GP said blips happen & it's only if it continues to stay high that you need to take meds. Mine went up day after my ovaries came out, so obviously some hormonal factor there.