###Human: Will taking Gestone one day earlier after frozen embryo transfer cause any problem? ###Assistant: Hi. From your query, it is understood that you have gone through the IVF cycle and Progesterone injection are just to maintain the pregnancy. So it does not matter much if you have taken one day before the scheduled dose. Now, subsequently, you take these weekly, meaning, all the doses one day beforehand the scheduled one. No need to worry. There would be no side effect surely. You be in touch for your pregnancy and have a safe pregnancy.