This is my 7th year after i start period. At first my period is 2 months once. Then it change to 3 months once and finally 4 months once. When i went to see the doctor they said to me it is normal. Even though i have period after a few months it only last for 7 to 8 days. But recently after 4 months i have my period but it didn't stop yet. It almost going to be 1 month for me having period. I am so worried about this. What is the actual problem for me? Why this is happening to me?