According to given history it seems like Left Eye Lateral rectus palsy or weakness. You should get yourself evaluated for
Diabetes,Hypertension (BP), Giant cell arteritis and a complete body check up. You may require investigations like MRA brain and thorough neurological and eye check up. Usually microvascular sixth nerve palsy resolves back to normal in around 6 months. But immediate intervention and treatment is required.
Next Steps
Ma'am I would advise you to immediately meet your nearby Ophthalmologist and Neurophysician.