The occurrence/severity of side effects is correlated with the duration of treatment and the doses of steroids used. Most problems are observed by patients taking long-term oral corticosteroids.

Information contained in the summary of product characteristics:

"People treated with corticosteroids may develop mental disorders. Corticosteroids can exacerbate already existing emotional instability or a tendency to psychotic states.

Possible side effects on the nervous system include euphoria, sudden mood changes; severe depression up to symptoms of psychosis; personality changes; insomnia."

Analyzing the description contained in the question - I do not think that two injections are able to generate a radical deterioration of mood.

On our website you can check the availability of medicines and make a reservation at the pharmacy:

https://www.gdziepolek.pl/produkty/23858/diprophos-iniekcja/apteki

I encourage you to read:

https://www.gdziepolek.pl/artykuly/czy-sterydy-sa-bezpieczne