Irregular periods. For your advice.

Hi Doctor, I am 32 years old and a mother of 2 kids. First child is 3.7 years old and second child is 10 months old. Both were normal delivery. I have had irregular periods before my first delivery, But things were kind of settled after my first delivery, with few times being irregular. Had periods twice after my second delivery. Now it's been 2 months that I got my last periods. Checked through pregnancy kit as well twice and it had been negative. Two weeks back, had visited a local gynaecologist on the period irregularity and she had prescribed 'Regestrone' tablet for 3 times a day for 3 days. Last dose ended a week back, still haven't got proper periods. (2 days back, there was just  couple of blood drops along with white discharge and that's all). Please help me on what needs to be done. Awaiting for your advice. Thank you. Regards, Rukmini