Six weeks pregnant and have this cold your type of pressure feeling to the left side of my head n face sometime. But no dizziness nor blurred vision.

Sinus pain? Do you have any sinus congestion? Whether you pregnant or not this seems to be related to sinus pressure & headache. If discomfort not severe and no other symptoms as blurred vision - try nasal saline rinses,. it moisturize and clean sinus area. In pregnancy is safe to use Tylenol (acetaminophen) for pain and if allergies - Zyrtec 10 mg daily safe as well. If not relieve follow with you primary MD.