[reposted] need more answers . please?

i am an 18 year old female. i weigh about 107 and im 5'3. latley i been having random muscle soreness. (right now my whole left arm feels reaallly heavy) and sore to around my neck. ive been havin alot of fatique and ive noticed my breathing isnt right (hasnt been for a couple yrs but nvr had gone to get it checked) when i breath in , its hard to breath out, and i can feel tightness/pressure in my lungs *i would think its asthma but im not sure* , past week when i go to bed ive also been having light "period-like' cramps...but im not on my period. i also had a dream and i researched wat it meant and i got (it forewarns my health is in jeapordy) . i might be over thinkin things but is there something wrong with me and wat could it be?? i dont want to have to go to a doc. if nothings wrong. also .... when i do get my period, the first day is like hell. like passin out, vomitin, cant move, droppin blood pressure, dizziness bad. (mom thinks i might have endometrosis ) i included that part bc i dont know if it has anything to do with wat i first mentioned...... any ideas to what is wrong with me?