Should I Repeat The Chest X-ray Given Increased Interstitial Markings On My Current One?

Hi, s/p covid 19 pcr positive last 15 days , Previous vaccination with Pfizer 2nd dose only 6 days after 2nd dose started with abdominal discomfoer, no fever , only back pain, malaise. has been 15 days since 1 rst symptom - xray negative for pneumonia ,but says increase interstitial markings . In view of this findings what you recommend to do ,repeat x-ray 6-8 weeks chest x- ray or do chest ct in what time. Or what to expect?