Ok guys I am 13+. I got my first ever period when I was 12. I lost very little amount of blood. Then the next 3 months I just got white discharge. Mum said I had iron deficiency and I was very afraid (My whole family is vegetarian including aunts and uncles). So then in November I lost a little blood. Now in December I just had a recent checkup with my doctor and she said my BMI was low maybe that is why I couldn't get proper periods.(I am very short).She said I should strecth out a lot. When I came home from the doctor's I went outside and rode my bike. When I came home my tummy and legs hurt. Then I went into the bathroom and noticed some brown discharge. I was very scared. I told my mum. So she told me wear a pad. Then when I woke up. MY WHOLE PAD WAS SOAKED. It wasn't the right date either. Now my period has lasted for 2 days and I am still bleeding. Guys would u please tell me that if I ride my bicycle then every time I will get a period. I am very worried and my lower abdomen hurts too. So help me people. THANKS!