Get your Usg done to rule out pcod and in unmarried time irregular period is common thing so Do not worry

Hello.......Polycystic ovarian syndrome is the most common cause for irregular periods in these days.. Periods occurs with the interval of two to three month gap in between..Other factors affecting cycle are sickness, physical and mental stress, young age, sudden change in weight,TBetc... You better consult gynaecologist once...