I am 15 weeks pregnant and experiencing a large sun shaped flashing image in the left eye for 10 minutes. whatcould it be?

Sun shape: Although this could be an ocular migraine (benign), this could also be a retinal problem, such as a tear or detachment. Call your local eye doctor and have this checked out...

Migraine: What you describe may be a visual migraine (no headache) which can be more common during pregnancy. If you experience more of these, please get a full dilated eye exam to rule out any eye related disease.

Ocular migraine: Ocular migraines can be triggered by hormone changes, such as pregnancy or birth control pills. There are many other triggers like caffein, chocolate, and stress. Symptoms are usually flashing / zig zag lights in the vision and typically is both eyes and last 5-30 minutes.

See eye md: Flashing light in one eye is a retinal problem until proven otherwise. See an ophthalmologist asap.