Why is my period brown?

Lauri

So im gonna start from the beginning. I’m 19 years old and My period came the day it was suppose to come. Although this time the cramps were much sharper and came on strongly after peeing or #2. The first day of this period I got the worse cramps. (the first day I usually get bad cramps but not as bad as this time) I ended up fainting and I was vomiting constantly. My cramps escalated so much that I had to go into the emergency room. I couldn’t keep my head up or my eyes open, I was very weak. I was dehydrated and very pale from vomiting and recent faint.

Its normal for me to have brown colored period at the first day. But I noticed it’s been dark brown and a light flow for four days already. I usually have normal red flow. But this period has been really different from the others. (I’m not pregnant btw) Tell me if this has happened to any of you, I really don’t know why my period is dark brown for 4 days already.