I was sick 4 two days and coughed up a chunk of mucus today. It was large amd rubbery like a piece of tissue and slightly bloody. It has happned before?

GO to to doctor. If you still feel unwell, suggest it is worth seeing a doctor for a quick chest exam.
See doctor... Any time blood is coughed up, you need to see your doctor. The most common cause of this is bronchitis but there are serious diseases that can cause this also, like malignancy. If you are a smoker, you need to quit. Your doctor can help with this as well. See your doctor so you can be diagnosed/treated.