<s>[INST] hi, so i was on the birth control needle for 3 months. it has been out of my system now since september 24th 2013, i still have not recieve my period. also for the last week ive been having odd pains in my lower stomach, and i wake up with a headache, and i get lightheaded very easily. which is not normal for me at all. I just want to know if because im not getting my period now if this is causing these symptoms?thanks. [/INST] HiWelcome to Healthcare-MagicGreetings of the dayIts quite common to have delay in initiation/resumption of periods after stopping injectable hormonal preparation.I suggest you to consult your Gynaecologist for further assessement.Withdrawal bleeding initiated by taking Nor-ethisterone may also initiate your periods and address your concern.Take CareBest Regards </s>