They do sound like canker sores. Here's a link about them:
I would suggest to go to your doctor because there might be serious underlying health issues causing them and there's also the possibility that those spots are something else :-(
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I've got a white blister with little white lumps inside my mouth on my lips. What are they? And how do I get rid of them?
By Peter from Little Hulton, Worsley, Manchester
Have you ever had cold sores, fever blisters, or canker sores (to rule them out)? Sometimes the inside of the mouth will break out if you are allergic to something you've eaten; it's the body's way of telling you to stay away from that food (of it may be an additive in a food you've ingested) - that's why some people get reactions to an additive in toothpaste. This is probably nothing, but I'd visit a doctor to know for sure. (Mouth cancers usually start as white patches, not blisters.) It will probably happen again, so I'd want to know what I was dealing with and how to take care of it.
Go to the doctor. This could be a type of virus and it will not go away without medicine.
What does it mean when you have a small bump on the inside of your lip?
You might have a cold sore, or you might have irritated it. It usually goes away on its own.
You say the sore is on the inside of your mouth so I do not think it is a cold sore as I believe cold sores are usually on the outside of the mouth. There are differences but many people just call them all "cold sores".
Since it is on the inside of your mouth it could be something called a "Canker" sore. It will look like a blister but may also be yellow in color. It can be caused by several things but usually goes away by itself in 10-15 days.
If it is very painful you can rinse your mouth with a small amount of regular table salt mixed in a cup of warm water.
Here is a web site that explains more about these bothersome sores.
Sorry, I forgot to mention that you may have bit your lip (we can do this without always knowing it happened) and it would be sore for a few days but a little salt in warm water will also help relieve the discomfort of this type of problem.
I usually get these when I either eat something I am allergic to or if I bite my lip in my sleep and it goes away in a day or teo. That said, if it there for more than a week, I would see if your dentist can look at it. Better safe than sorry! Let me know what you learn! Sending up healing prayers!
Could be a canker sore or a cold sore. Get something like Ambesol if you can.
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I have a really bad blister or something on the inside of my lip. It hurts like a cut, but looks like a blister of some sort. Does anyone have any idea what it is, and how to get rid of it soon?
I have a little blister on the side of my mouth were my teeth are. It's on the inside of my gum, not the outside. It's been there for almost 6 months.