canker sores

OK I get a lot of canker sores. (Inside mouth, white ulcers). They seem to last weeks. They can even weaken in pain, seem to get better and then get painful again, over a period of 10 days to two weeks. But I also occasionally will accidently bite my lip or cheek while talking or eating, and it can even be a very slight nick, but it turns into a major canker sore "wound" lasting as long as a major canker sore. This is so bizarre. Need help badly. Its almost a constant. I'm a 50 year old male
Thanks for some input Tweet