If you have had regular 28-30 day cycles prior to this and if you are sexually active without any contraception
, you should exclude pregnancy
first before you think of anything else. Please get either a HPT with a fresh early morning sample of urine or go for the serum beta-hCG
assay which is conclusive and also a trans-vaginal sonogram if you do not get your cycle even after 3-7 days after completion of the treatment. Hope this helps. Take care.