I have been suffering from PCOD since many years and have undergone treatment also.But still my periods were irregular. Since last 6 months i have been trying to loose weight. During this time i also started having regular period without any medication. But suddenly i missed my period in march. So i took regestrone 5mg tablet twice a day starting from 7th april for five days. But today its 17th april and still i have not got my periods. Is it anything to worry or what should i do now? Am i pregnant because i also had sex with my partner in between but we used protection? Can you please on this.