so if i just hold my arm up over my head it doesnt swell..and turning my head to the opposite site it doesnt swell

but last night i was swinging my arms around a lot and my more winged arm/side started swelling


does it sound like my shoulder is so droopy it's making my vein (?) get cut off? if i tell a doc this they won't believe me. i almost want to make my arm swell up and then go to the er