My period alway's last 5 days. On the 3 and 4th day it's usually really light. I was wearing a tampon and the string broke. After I mannuelly removed it I noticed I'm bleeding really heavy and it's bright red. I'm also clotting which I don't normally do. Has anyone had anything like this happen to them?

You may have aggravated something internally, possibly a cervical polyp, when manually removing the tampon. If you usually have lighter bleeding and it is now heavier you should give it another cycle to see if it is irregular also. If so see your OB/GYN. Your hormones may be changing or you may have a condition causing irregular bleeding. Have you ever been diagnosed with a fibroid? Do you take birth control pills? All things to be considered.