Hi all… I am 18 years old and my last period has been 49 days ago. I am wondering whether it is able Tamiflu to cause you to miss a period? I know that you are thinking that most likely I am pregnant, no I am not because I am still a virgin so there is no way that I am pregnant. So please, forget about the pregnant thing. Well, I did some research and it is saying that the medications can cause a period to be missed. I did have taken 1 tamiflu the last month for, if my memory serves me right, 5 days and that’s because my parents have had the flu. In addition to that, I must say that I have also taken Tetracycline for a little while too. Is it possible that the Tamiflu made me miss a period? Or maybe tetracycline? Or maybe a combination of the 2? I really have no idea whether does have anything to do at all with this missed period so if there is somebody out there that can tell me something then this would be really nice. Please help with anything that you can. Thanks for everything.