is this normal?

ok so im 22 and im 5'6 i weight 200lbs. i finnaly got my period.... BUT.... its been 11 freakin days of this shit.... is it normal?? i usually only have 5-7 days of my period i think i had a miscarrige in the begining of it cuz i had a big ass blood clot and it had white crunchy shit in it..... 😶😣😣😣 really dont want to think i was crushing my child in tp... but is that what i did??.... 😭😭 ive been trying to have a baby for years ive gotten all negitives.... im scares that something might be wrong...