Hi.
X-ray may not be the investigation of choice in this scenario. Is the swelling one-sided, or on both sides of the face, or around the eyes? Are there any other associated symptoms like nasal discharge/nasal block, headache, vision issues?
The swelling of the face may be due to local causes like infection in the sinuses or may even be due to other systemic causes like
kidney issues. Since she has just recovered from Covid-19, I would suggest that you see an ENT specialist in person soon to rule out any infection.
Regards, Dr. Aanchal, Therapeia centre, Bangalore