Bubble underneath right ear

Hi, Im a male 26 with an acne problem, which I couldnt get rid of for years, Ive tried everything And i mean EVERYTHING, but this is not about the acne, Its about a "sis' or a boil? its like a bubble soft bubble behind my right ear a bit underneath/behind the ear?, I tried poking it maybe thinking it was puss but it got bigger and it's really got me scared. What can it be?

[chellybeans]

sounds like a cyst. is it painful? be careful poking it will make it inflamed( the reason it got bigger)

a doctor can drain it, inject it or excise it if it is a problem. you will need care if it is very painful, feverish or has red streaks coming from it as that is a sign of septicemia(blood poisoning)