Thanks for posting your query,
Accidental Trauma due to biting of your tongue and scalding result in tear and pain in the tongue. Probably there is accumulation of healing tissue and cells in the area resulting in the formation of white tissue , as you irritated the healing tissue it again resulted in bleeding .
Cancers of tongue occurs when it is irritated with tobacco chewing and smoking
Visit to an Oral and Maxellofacial Surrgeon and get the checkup done .
Lump in the lower lip can be due to abscess
formation , irritation due to chemicals or physical trauma , get it checked by the Dentist
Do not irritate the lesion .
Take care that it doesnt get infected.
Maintain a good oral hygiene .
Take saline water gargles 3-4 times a day .
Apply dologel or mucopain ointment topically over the affected area..
Hope this helps out....