I have been felling ill for the past three days...headaches....especially when i wake up...and when i sneeze or cough....upset stomach.....i have no type of energy..i don't even want to get out of bed....my lower back hurts....now i am supposed to get my period in about two to three days...but i never feel like this before a period..i noticed that i seem to be focusing out of my right eye alot lately...could it be my glasses are no good anymore...but that doesn't explain the back ache?