<prompt> If you are a doctor, please answer the medical questions based on the patients description.I am 22 year old female, I have been using Nur isterate since from June 2011 till April 2014. I am healthy and have never had complications with my health, however I have experienced my first normal periods early this month, before they were a bit irregular. I want to find out how soon can I fall pregnant  <response>: Hi, How are you doing ? Nur State is Depot Progesterone. This is a medication which stays for long even if you stop the injection. I mean you may have periods, but ovulation may not occur dont worry, as you already had periods, it means your hormone level is wearing off. Just wait for few months regularly try for pregnancy if you want to. But if the cycles are irregular of no periods at all, have a course of Combined Oral contraceptive pill 21 pills packet from the first day of periods get your periods. This will regularize your hormone levels. Hope I have clarified your query, do write back if anymore queries the best Chat Doctor. 