Sore lumps on back of tongue, very inflamed looking. quite painful and annoying. wht cld this be?

Needs to be seen: Could be sore or inflamed taste buds, bacterial or viral infection or something else. Depending upon how sore, other symptoms, and\or how curious as to the cause, see pcp, ENT or dentist. We can't diagnose over the internet, especially sight unseen.

Painful lumps: Could be many things, most of which are benign. Call your Dentist and request an appointment so that he/she can actually see the "lumps" and advise you.