Should i go to the hospital?

Last night i developed a severe headache, and felt so hot that i went and laid on my bathroom floor half naked covered in rags. i was nauseous but didn't throw up, i was shaking bad and really dizzy. This morning at 4:30 i woke up and just threw up all on my floor, i couldn't even make it out of my room. i tried to eat some oatmeal but i threw that up 10 minutes later. in total i threw up about 10 times today, the last time being about 10 minutes ago. i couldn't even hold water down. No medicine has helped, and my headache is still severe. ive developed pain in my joints especially my arms and legs, and weird little petetichae (spelling) on my stomach and arms. they are really small, under the skin and are purplish/red. they do not hurt or itch. my stomach is starting to hurt.. The worst is the chest pain ive developed directly between my breasts, closer to the left side. its lie=ke a stabbing/dull pain that makes it harder to breath. i normally weight about 122, but im down to about 110-114, i have a normal appetite yet i throw it all up. should i go to the hospital, or toughen it out?