If you are young, your periods could be irregular and light. Cramping usually accompanies a period, when you start, you will know it.
Yes, you have started your period. How old are you?
Capillaries is the answer in this question
Chromosomes
hemoglobing
Blood will appear on your underwear
bhone marrow
They are called as platelets.
yes
Capillaries are the tiniest blood vessels. They connect arteries and veins.
"capillaries"
Capillaries is the answer in this question
then you were on your period. pain & blood is often associated with the menstrual cycle.