hey i am 26 years of age i missed to months of my cycle i been vomiting off an on for the past 4 weeks and my head been hurtin for the past three days i also have been havin stomach pains for the last three days feels like its my ribs. i have irregular cycles an a 5cm cyst on left ovary. please help me. an i also took a pregnacy test an it was negative but for some reason i really feel like im pregnant..