Angina Bullosa Hemorrhagica: a fancy word for a blood blister. If you get this in your mouth, do not be alarmed. It is usually caused by some type of trauma. vintage rustic collections for wedding in Tea length
-Did you bite your cheek or tongue
-steroid inhaler
-sharp foods like chips

If you have multiple sites of this blood blister, than something else could be going on. Diabetes, High blood pressure, ischemic heart disease,

Areas usually affected are palate, tongue, lips, under tongue, floor of the mouth, back of the throat.

In any case, if it does not go away in a few days call for an appointment to diagnose it and help the area heal.