The biopsies could be the cause...
Still, if you're still uncomfortable, it's always better to check.
Glad to hear you have healed! That's great news.
Words of wisdom by Eckhart Tolle:
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”