Dear stella522,
I would recommend that you seek the care of an eyeMD to determine your blood pressure and whether you may have other bleeding issues.
Dr. Feldman
Sandy T. Feldman, M.D., M.S.
ClearView Eye and Laser Medical Center
San Diego, California
Please make a call to see an ophthalmologist to have your eye looked at since you also have a headache. An isolated small subconjunctival hemmorahge is usually not a major cause for concern provided there is not pain, pus, vision loss or injury. In your case since you are having a headache it might be best to have it looked at.
MJK MD