<s>[INST] i am 34 yrs old. i m taking infertility treatment since one and half year. i have a five years old son. my lmp was 2 july. i took letrozole and evecare, ovacare medicines this month. i also took duphaston but only 7 tablets. my periods have not come till now but i took a pregnancy test today morning whicChatDoctore out negative. moreover it is pertinent to mention that my periods are continuing only for a day or two since last one year. what should i do? [/INST] Hi, I have gone through your question and understand your concerns. Delayed periods can be due to pregnancy or the duphastone tablets you have taken. Duphastone is progesterone which Is given in infertility to make the uterine environment more favorable for conception. Letrozol is given for ovulation induction, ova care and eve care is given for assisting conception. I would suggest you to wait for 7-10 days after stopping duphastone tablets for the periods to occur. If the periods do not occur by then, then do consult an ORGAN specialist to get properly examined, investigated (including hormonal profile) and appropriate treatment. Hope you found the answer helpful. Wishing you good health. </s>