Brown blood is actually vaginal slime mixed with blood. It is a little bit of blood diluted with slime. Nothing to worry about.
There's no such thing as 'white blood', all blood is red. It may be that you're talking about discharge, you get more before menstruation due to changes in your hormones throughout your menstrual cycle.
Blood levels of estrogen and progesterone decrease.
Yes, it is normal for period blood to clot during menstruation. Clotting can occur when the blood flow is heavy and the blood is expelled quickly, causing it to clot before it exits the body.
i got a period and it was red but when it dries it turns brown so i don't think you need to worry anything about it :)
The brown stuff is spotting, small amounts of blood mixing with discharge, the blood turns brown when it's come in contact with air or as a result of the blood taking some time to leave the body. You can spot for a lot of reasons including ovulation (which will occur two weeks before menstruation), hormonal changes, or it can occur before your period - sometimes that spotting can be your period, if your period is very light. Without knowing your cycles better there is no way of knowing what this spotting is caused by to know how it could relate to menstruation, so just make sure you're prepared for when your period does start.
The brown stuff is blood mixing with discharge - blood from your uterus lining sheeding, normally a result of menstruation but sometimes due to other hormonal changes, if it takes time to leave your body it will turn this brown colour rather than looking like red or pink when mixed with discharge.
menstruation
It is not unusual for menstrual blood to be brown, especially at the beginning or end of menstruation. This is because menstrual fluid contains tissue and other substances besides blood.
Simply, you get horny before or during your period due to hormonal changes. There is also a little more discharge before menstruation and then blood during menstruation which the brain can interpret as being increased vaginal lubrication as with arousal.
I think it bad because it stops the blood from flowing through your vagina
It's not blood.
Yes. Menstruation will not affect antibody levels or actual virus in the blood if you are infected.