Hello Sir, It seems like you may be having an allergic reaction to the pineapple. Please do not ingest any more of the pineapple at this time. I recommend you see an allergy specialist to find out what you are allergic to. I hope this helps.

Tingle on tongue could be some reaction. Bleeding tongue is unusual. If it stopped and didn’t reoccur, then wouldn’t worry about it.

Bleeding from tongue after drinking pineapple juice: While you did not specify whether you had profuse bleeding or slight oozing, it is definitely not normal. You must see your dentist and consult with your physician. Sometimes a lesion on the tongue may not have been diagnosed, or occurred between periodic visits. Nevertheless, the tongue should be carefully given a physical examination. This could be a serious problem. It is also possible that the source of bleeding is a periodontally infected tooth where the bleeding is occurring along the gum line and is only showing up on your tongue. Your dentist needs to perform a thorough examination of all your teeth. An immediate appointment is necessary. Do not delay.