Sabar je, babe, a few of us gone through this jugak, sometimes stress or hormonal changes can delay period even if test is negative. Tapi kalau dah seminggu lebih dan test negative, best you go see your gynae to rule out anything else, biar tenang hati. Could be anything from PCOS to thyroid issues, doctor boleh check properly. Jangan stress sangat first, sometimes that makes it delay lagi!