Dear friend, welcome to HCM.
yes, it can occur again.
i guess it was a peptic ulcer
. not a cancerous one.
can occasionally be cancerous.
it may be an ulcer again or gastritis
how old are you now?
better get checked. probably an endoscopy (OGD scopy) will be needed.
but you should see your gastro-enterologist for proper evaluation and full tratment.
take care and pl. keep me posted on your progress.