Ihave had very painful swollen taste buds on sides & tip of my tongue for about 2 months now, i don't know what could be causing it or how to stop it.

Needs to be seen: There are many possible causes of your problem. Unfortunately, we can't diagnose the cause over the internet without a thorough medical and dental history and personal clinical examination. Start by seeing a general dentist or oral surgeon if you want to know what is causing it and how it can be treated.

Sore tongue: The sore taste buds are likely a local reaction, though you need to consult a general dentist who will likely refer you to an oral surgeon for evaluation.