hi. i am a 33 year old female. just recently, within the past week, i have had a scratchy throat, red eyes-no itching or pus, no fever, occassional nausea, constipation and/or diarreah,, a missed period with a negative pregnancy result.i am not on any medication or birth control. i am 5'3", weigh about 135-140 lbs. i have been trying to exercise more often but not too crazy.it is tuesday today. on friday about 4p.m. i got a slight migraine wth blurred vision and nausea. what is going on???