Endometriosis? I'm suppose to start my period by friday, but these past two days i have been very tired,?

feeling very fatigue, have a slight fever i believe, and just now threw up. i've never thrown up before my period. i know most are thinking you may be pregnant. i highly doubt it for two reasons: my boyfriend and i are protective, he's never "finished" whatsoever even. Also i was told last month i may have endometriosis since every month I am hurled over in so much pain i cannot function normally throughout the day and have a history of having cysts along with having some other symptoms. i must also mention three weeks ago due to insurance reasons i had to completely stop taking my zoloft and abilify since i ran out and had no prescription, but wouldnt i have felt the effects of stopping that medication less than three weeks after? please help me!!!!!!!!