<s>[INST] my period is almost 1 month then i go see ob but mt ob do for me a ultra sound then he say my womb got virus then he give me midicine norethisterone good for 21 days then i finish take this coming 17 but until my period still got but the doctor say i come back on this coing 29 so i want to know this virus is what ind im single ang this dec i coming 40 my age [/INST] Hello, I understand your concern. I am Chat Doctor, Infectious diseases specialists, responding to you. There are no viruses that can infect womb and got diagnosed by ultrasonography think it's only a hormonal imbalance that is affecting your periods. Norethisterone prescribed to you will help you in recovering such an imbalance and establishes your normal cycle. I will be glad to answer your further query. Thank you for your contact to Chat Doctor. Wish you the best health. Thank you, ChatDoctor. </s>