Brief Answer:
Drug induced gastritis. Symptomatic care advised.

Detailed Answer:
Thank you for asking

I read your question and i understand your concern. Back pain was well managed with corticosteroid pack as anti inflammatory agent. Along with it rest, posture rehab and avoiding weight lifting exercises are advised.

Recent right upper quadrant pain can be considered gastritis secondary to recent corticosteroids use. Take some pepto and nexium for that, use corticosteroids after meals. Nothing to worry about. Just comply with the medication use and take supportive care for gastric discomfort.

I hope it helps. take good care of yourself and don't forget to close the discussion please.

Regards
Khan

---