Hi Mintea, I'm not an HRT 'expert' but I have read a lot about cutting HRT patches and there's some inconsistency of opinions about this. I have found a link to a hospital website advising how to cut them correctly and it's completely different from what it's usually done so maybe you had variable amounts of estradiol and norethisterone and now that you have a full patch your body might need some time to adjust to the new levels.