If you have always been regular with your cycles, are sexually active and on no contraception
, you should exclude pregnancy
first. As your HPTs were negative, it is difficult to say whether you performed the test too early as your dates are not given. It would be ideal to go for a serum beta-hCG
assay for a definite confirmation/exclusion of pregnancy. You should also get a trans-vaginal sonogram and see a specialist for a proper appraisal of the situation. Hope you find this information useful. Good luck.