Dr said that if I swapped I wouldn't get periods, so I thought I would give it a try, but I felt great on Femoston. I just feel like I have constant PMT at the moment, so not sure the Progesterone is working for me. I have seen that others take it vaginally rather than by tablet, so I might need to swap and see if that works. If that fails I think I will go back to Femoston.