Ok sorry to do the teething q's again but ds has had white raised lumps on his gums for ages but no action. Today when he was crying I noticed what looked like blood in his mouth just below the ridge of his gum on the inside, I though maybe this might finally be a tooth. On further investigation it is not bleeding but seems to be like a blood blister, he definately doesnt like it to be touched!. Is this normal during teething or should I get it checked out.