Hi doctor I am 17 years old girls nd I had sex about 1.5 months ago nd after that I had skipped my periods nd also started getting some marks on my stomach bt when we go for a pregnancy test in the early morning it came out to be negative nd for the regular periods I started taking deviry 10 mg twice a day bt its abt 8-9 days had been past bt still not getting periods nd I am an overweight person also so is this a reason of pregnancy or not if not so why im not getting periods? Can you tell me some other medicine for regular periods?