There is no proven evidence to confirm that ibuprofen could make COVID-19 symptoms worse.
WHO tweeted that it is aware of concerns on the use of ibuprofen in COVID-19 patients, but WHO wouldn't recommend the non-use of ibuprofen based on currently available information.
European Medicines Agency (EMA) states that there is no scientific evidence to link between ibuprofen and increasing of coronavirus symptoms as of 7 May 2020. It added that patients and healthcare professionals should consider all available treatment options, including paracetamol and NSAIDs.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.