recently, i have been noticing these blood blisters like things on the inside linings of my mouth. there are not a lot but i dont know what they are so i am concerned. i get them very few weeks it seems. they dont hurt. i have been just squeezing them until they pop and a little blood comes out. after i do that, they go away in a few days or so. needlessly to say i want to know what they are. i would appreciate it a lot. hopefully they are not serious. thanks.