Thanks for your query, i have gone through your query, the ulcers on your tongue could be secondary to allergic reaction
caused by MDMA... it can allergic contact stoamatitis.. stop using MDMA, nothing to worry it will subside by its own just take symptomatic treatment like topical anesthetic
like anabel gel 3-4times daily...if it doesnt subside take topical steroid
like kennacort oral paste 0.1% 3-4times daily for 1 week...i hope my answer will help you...
wish you speedy recovery..with regards.
Dr. Mahesh Kumar T.S