I have a small colourless bump on the inside of my lip, i can only feel it with my tongue, i'm 18, its been there for almost a year ?

Consult your PCP: You should see your pcp for examination and assessment of this bump. Since, it has been there for almost a year, makes this lesion, more of a concern. Immediate evaluation to diagnose the condition is very important, so that it may be treated appropriately.Thanks.

Bump inside lip: Sounds like a benign mucocele, a blocked minor salivary gland. You should see your doctor for an exam.