I have huge bumps on my body when im stressed HELP!

i’ve been noticing for the past couple of months that when i’m stressed i get huge and small pumbs all over my body; arms, breasts, legs, and even inside my mouth, but mostly it shows up all over my head especially behind my neck and ears, and it’s as huge as an egg or sometimes bigger and as hard as a rock, but it disappears after a few hours when im relaxed,,, plz help me,, its not easy to go to a docter here,,, i need an answer ASAP, isit something serious?