Post covid D-Dimer. Anything to worry?

My mother age 50 was suffering from covid 19 and on 3rd april she admitted to hospital as her Oxygen level drops to 88 and later 85 and she had 6 remdesiver and 1 tocilizumab , my ques is on 13th she get discharged from hospital and her Oxygen after that never went down from 96-97 but after post discharge medication gets over she facing little pain in upper abdomen dull pain , we done ECG which is normal , sonography of abdomen shows fatty liver grade 2 and excess gass in abdomen, her d dimer value checked on 28th april is also high 2880 and her crp value is 22 and rest of cbc was normal , she was not a sugar patient but her sugar also increased may be due to covid medication please tell me is anything to worry ? Doctor prescribed exafib 10mg for d dimer